a打头单词

abase / ə`beɪs / verb FORMAL
abdicate / `æbdɪ,keɪt / verb
╾ abdication / ,æbdɪ`keɪʃn / noun [count or uncount]
aberrant / æ`berənt / adjective FORMAL
abet / ə`bet / verb [transitive] FORMAL
abeyance / ə`beɪəns / noun FORMAL
abhorrent / əb`hɔrənt / adjective FORMAL
abide / ə`baɪd / verb [intransitive]
abject / `æb,dʒekt / adjective FORMAL
abjure / æb`dʒʊr / verb [transitive] VERY FORMAL
╾ abjuration / ,æbdʒʊ`reɪʃn / noun [uncount]
abnegation / ,æbnɪ`geɪʃn / noun [uncount] VERY FORMAL
abode / ə`boʊd / noun [count] FORMAL
abolish / ə`bɑlɪʃ / verb [transitive] *
abominable / ə`bɑmɪnəbl / adjective FORMAL
abominate / ə`bɑmɪ,neɪt / verb [transitive] FORMAL
aboriginal / ,æbə`rɪdʒənl / adjective FORMAL
Aboriginal / ,æbə`rɪdʒənl / noun [count]
abortive / ə`bɔrtɪv / adjective
abound / ə`baʊnd / verb [intransitive]
 2 abound with/in to be filled with or contain a great deal of something:
aboveboard / ə`bʌv,bɔrd / adjective
abrade / ə`breɪd / verb [transitive] TECHNICAL
abrasion / ə`breɪʒn / noun
abreast / ə`brest / adverb
keep/stay abreast of something
abrupt / ə`brʌpt / adjective
abscond / əb`skɑnd / verb [intransitive] FORMAL
absenteeism / ,æbsən`ti,ɪzəm / noun [uncount]
absolve / əb`zɑlv / verb [transitive]
absolve someone from/of something: The report absolves the pilot from any blame for the crash.
abstemious / əb`stimiəs / adjective OFTEN HUMOROUS
abstinence / `æbstɪnəns / noun [uncount]
╾ abstinent / `æbstɪnənt / adjective
abstruse / æb`strus / adjective FORMAL
absurd / əb`sɜrd,   əb`zɜrd / adjective *
absurd, the / əb`sɜrd,   əb`zɜrd / noun
abundance / ə`bʌndəns / noun [uncount] FORMAL
abundant / ə`bʌndənt / adjective FORMAL
abusive / ə`bjusɪv / adjective
an abusive parent/husband/wife
abysmal / ə`bɪzml / adjective
abyss / ə`bɪs / noun [count]
accede / ək`sid / verb [intransitive] FORMAL
accentuate / æk`sentʃu,eɪt / verb [transitive]
accessible / ək`sesəbl / adjective
╾ accessibility / ək,sesə`bɪləti / noun [uncount]:
accessory / ək`sesəri / noun [count] **
car/kitchen/computer accessories
acclaim 1 / ə`kleɪm / noun [uncount]
win/receive/attract acclaim: In a recent poll, Seattle won acclaim as the United States' most progressive city.
acclaim 2 / ə`kleɪm / verb [transitive usually passive]
acclimate / ə`klaɪmət,   `æklɪ,meɪt / verb [intransitive or transitive] AMERICAN
become/get acclimated to something: First the team must become acclimated to this higher altitude.
╾ acclimation / ,æklɪ`meɪʃn / noun [uncount]
accolade / `ækə,leɪd / noun [count]
accomplice / ə`kʌmplɪs / noun [count]
accost / ə`kɔst / verb [transitive] FORMAL
accretion / ə`kriʃn / noun [count or uncount]
accrue / ə`kru / verb FORMAL
acerbic / ə`sɜrbɪk / adjective
╾ acerbically / ə`sɜrbɪkli / adverb
╾ acerbity / ə`sɜrbəti / noun [uncount]
acme / `ækmi / noun
acne / `ækni / noun [uncount]
acolyte / `ækə,laɪt / noun [count]
acorn / `eɪ,kɔrn / noun [count]
acquaint / ə`kweɪnt / verb [transitive] FORMAL
acquaintance / ə`kweɪntəns / noun
acquiesce / ,ækwi`es / verb [intransitive] FORMAL
acquiesce in/to: Despite acquiescing in the board's decision, he had never really changed his own view.
acquit / ə`kwɪt / verb [transitive]
acquit yourself well/honorably/admirably etc.
acquittal / ə`kwɪtl / noun [count or uncount]
acrid / `ækrɪd / adjective
acrimonious / ,ækrɪ`moʊniəs / adjective
acrimony / `ækrɪ,moʊni / noun [uncount]
acronym / `ækrə,nɪm / noun [count]
actuarial / ,æktʃu`eriəl / adjective BUSINESS
actuary / `æktʃu,eri / noun [count]
actuate / `æktʃu,eɪt / verb [transitive] TECHNICAL
acuity / ə`kjuəti / noun [uncount] FORMAL
acute / ə`kjut / adjective [usually before noun]
adage / `ædɪdʒ / noun [count]
adamant / `ædəmənt / adjective
adapt / ə`dæpt / verb **
adaptable / ə`dæptəbl / adjective
╾ adaptability / ə,dæptə`bɪləti / noun [uncount]
addendum / ə`dendəm / (plural addenda / ə`dendə / ) noun [count] FORMAL
additive / `ædətɪv / noun [count]
color/food additives
adduce / ə`dus / verb [transitive] FORMAL
adept 1 / ə`dept / adjective
adept 2 / `ædept / noun [count]
adherent / əd`hɪrənt / noun [count] FORMAL
adjoin / ə`dʒɔɪn / verb [intransitive or transitive] FORMAL
adjourn / ə`dʒɜrn / verb [intransitive or transitive]
adjudicate / ə`dʒudɪ,keɪt / verb [intransitive or transitive]
╾ adjudication / ə,dʒudɪ`keɪʃn / noun [uncount]
adjunct 1 / `ædʒʌŋkt / noun [count]
adjunct 2 / `ædʒʌŋkt / adjective [only before noun] AMERICAN
adjutant / `ædʒətənt / noun [count]
admonish / əd`mɑnɪʃ / verb [transitive] FORMAL
adolescent 1 / ,ædə`lesnt / noun [count] *
adolescent 2 / ,ædə`lesnt / adjective
admission / əd`mɪʃn / noun **
▸  1 permission to join/enter
adorn / ə`dɔrn / verb [transitive]
adroit / ə`drɔɪt / adjective FORMAL
adulation / ,ædʒə`leɪʃn / noun [uncount]
adulterate / ə`dʌltə,reɪt / verb [transitive]
╾ adulteration / ə,dʌltə`reɪʃn / noun [uncount]
advent / `æd,vent / noun
Advent / `æd,vent / noun [count or uncount]
adventitious / ,ædvən`tɪʃəs / adjective VERY FORMAL
adverse / æd`vɜrs / adjective *
adversity / æd`vɜrsəti / noun [count or uncount]
advisable / əd`vaɪzəbl / adjective
╾ advisability / əd,vaɪzə`bɪləti / noun [uncount]
advocacy / `ædvəkəsi / noun [uncount]
advocate 1 / `ædvə,keɪt / verb [transitive] *
advocate 2 / `ædvəkət / noun [count] *
aegis / `idʒɪs / noun
aerate / `e,reɪt / verb [transitive] SCIENCE
╾ aeration / er`reɪʃn / noun [uncount]
aerie / `eri / noun [count]
aeronautics / ,erə`nɔtɪks / noun [uncount]
aesthete / `es,θit / noun [count]
aesthetic 1 / es`θetɪk / adjective
aesthetic qualities/theories/ideals
╾ aesthetically / es`θetɪkli / adverb:
aesthetic 2 / es`θetɪk / noun
affable / `æfəbl / adjective
╾ affability / ,æfə`bɪləti / noun [uncount]
affectation / ,æfek`teɪʃn / noun [count or uncount]
affected / ə`fektəd / adjective
affection / ə`fekʃən / noun [uncount] *
affidavit / ,æfɪ`deɪvɪt / noun [count]
aptitude / `æptɪ,tud / noun [count or uncount]
aquifer / `ækwəfər / noun [count] TECHNICAL
appropriation / ə,proʊpri`eɪʃn / noun [count or uncount] FORMAL
appraisal / ə`preɪzl / noun *
apologist / ə`pɑlədʒɪst / noun [count] FORMAL
apace / ə`peɪs / adverb FORMAL
animosity / ,ænɪ`mɑsəti / noun [count or uncount]
antagonism / æn`tægə,nɪzəm / noun [count or uncount]
antagonism toward/to: It was difficult to explain their antagonism toward strangers.
annihilate / ə`naɪə,leɪt / verb [transitive]
╾ annihilation / ə,naɪə`leɪʃn / noun [uncount]
anguish / `æŋgwɪʃ / noun [uncount] FORMAL
anaemic / ə`nimɪk /
anachronism / ə`nækrə,nɪzəm / noun [count]
╾ anachronistic / ə,nækrə`nɪstɪk / adjective
amenable / ə`minəbl / adjective
amber 1 / `æmbər / noun [uncount]
amber 2 / `æmbər / adjective
apposite / `æpəzɪt / adjective FORMAL
appraise / ə`preɪz / verb [transitive]
appreciable / ə`priʃəbl / adjective
apprehend / ,æprɪ`hend / verb [transitive]
apprehensive / ,æprɪ`hensɪv / adjective
apprentice 1 / ə`prentɪs / noun [count]
apprentice 2 / ə`prentɪs / verb [transitive usually passive]
apprise / ə`praɪz / verb [transitive] FORMAL
approbation / ,æproʊ`beɪʃn / noun [uncount] FORMAL
appropriate 1 / ə`proʊpriət / adjective ***
appropriate to/for: We need to ensure that the teaching they receive is appropriate to their needs.
appropriate 2 / ə`proʊpri,eɪt / verb [transitive]
antecedent / ,æntɪ`sidnt / noun
antediluvian / ,æntidɪ`luviən / adjective HUMOROUS
anthem / `ænθəm / noun [count]
anthology / æn`θɑlədʒi / noun [count]
anthropoid / `ænθrə,pɔɪd / adjective
anthropomorphic / ,ænθrəpoʊ`mɔrfɪk / adjective
╾ anthropomorphism / ,ænθrəpoʊ`mɔr,fɪzəm / noun [uncount]
antihistamine / ,æntɪ`hɪstə,min / noun [count or uncount]
antipathy / æn`tɪpəθi / noun [uncount] FORMAL
antipathy for/to/toward: She found it hard to hide her antipathy toward her colleagues.
╾ antipathetic / ,æntɪpə`θetɪk / adjective
antiquity / æn`tɪkwəti / noun
antiseptic / ,æntɪ`septɪk / noun [count or uncount]
antithesis / æn`tɪθəsɪs / noun [singular] FORMAL
╾ antithetical / ,æntɪ`θetɪkl / adjective
antler / `æntlər / noun [count]
anvil / `ænvɪl / noun [count]
aorta / eɪ`ɔrtə / noun [count]
apathetic / ,æpə`θetɪk / adjective
╾ apathetically / ,æpə`θetɪkli / adverb
aperture / `æpərtʃər / noun [count]
apex / `eɪ,peks / noun [count] FORMAL
aplomb / ə`plɑm / noun [uncount]
aphasia / ə`feɪʒə / noun [uncount] MEDICAL
aphorism / `æfə,rɪzəm / noun [count]
apiary / `eɪpi,eri / noun [count]
apocryphal / ə`pɑkrəfl / adjective
apogee / `æpədʒi / noun [count]
apolitical / ,eɪpə`lɪtɪkl / adjective
apologist / ə`pɑlədʒɪst / noun [count] FORMAL
apoplexy / `æpə,pleksi / noun [uncount] INFORMAL
apostate / ə`pɑs,teɪt / noun [count] FORMAL
apostrophe / ə`pɑstrəfi / noun [count] *
apothecary / ə`pɑθə,keri / noun [count]
apotheosis / ə,pɑθi`oʊsɪs / noun [usually singular] VERY FORMAL
apparel / ə`perəl / noun [uncount]
appellation / ,æpə`leɪʃn / noun [count] FORMAL
appendage / ə`pendɪdʒ / noun [count] FORMAL
applause / ə`plɔz / noun [uncount]
thunderous/rapturous applause: Gere walked onto the stage amid thunderous applause.
applicable / `æplɪkəbl,   ə`plɪkəbl / adjective [not usually before noun] *
╾ applicability / ,æplɪkə`bɪləti / noun [uncount]
apron / `eɪprən / noun [count]
apropos 1 / ,æprə`poʊ / preposition FORMAL
apropos 2 / ,æprə`poʊ / adjective FORMAL
apt / æpt / adjective *
aptitude / `æptɪ,tud / noun [count or uncount]
aquatic / ə`kwætɪk / adjective
aqueduct / `ækwə,dʌkt / noun [count]
aquifer / `ækwəfər / noun [count] TECHNICAL
aquiline / `ækwɪ,laɪn / adjective FORMAL
arabesque / ,erə`besk / noun [count]
arboreal / ɑr`bɔriəl / adjective TECHNICAL
arboretum / ,ɑrbə`ritəm / noun [count]
arcade / ɑr`keɪd / noun [count] *
arcane / ɑr`keɪn / adjective FORMAL
archipelago / ,ɑrkɪ`peləgoʊ / noun [count]
arch 1 / ɑrtʃ / noun [count] **
arch 2 / ɑrtʃ / verb [intransitive or transitive]
arch3 / ɑrtʃ / adjective
an arch smile/tone
arch- / ɑrtʃ / prefix
arctic / `ɑktɪk / adjective
Arctic / `ɑrktɪk / adjective
Arctic, the / `ɑrktɪk /
arena / ə`rinə / noun [count] *
aria / `ɑriə / noun [count]
arid / `erɪd / adjective
╾ aridity / ə`rɪdəti / noun [uncount]
aristocracy / ,erə`stɑkrəsi / noun [count]
armada / ɑr`mɑdə / noun [count]
armistice / `ɑrmɪstɪs / noun [count]
aroma / ə`rəʊmə / noun [count]
aromatic / ,ærə`mætɪk / adjective [usually before noun]
aromatic herbs/leaves/soap
arouse / ə`raʊz / verb [transitive] **
arraign / ə`reɪn / verb [transitive usually passive] LEGAL
arrant / `ærənt / adjective [only before noun] FORMAL
arrant nonsense/sexism
arrears / ə`rɪəz / noun [plural]
tax/rent/payment arrears
arresting / ə`restɪŋ / adjective FORMAL
arrogate / `ærəgeɪt / verb [transitive] FORMAL
arroyo / ə`rɔɪoʊ / noun [count]
arsenal / `ɑrsnəl / noun [count]
an arsenal of guns/ammunition/nuclear weapons
arthritis / ɑr`θraɪtɪs / noun [uncount]
╾ arthritic / ɑr`θrɪtɪk / adjective
artifact / `ɑrtɪ,fækt / noun [count] *
artifice / `ɑrtɪfɪs / noun [uncount]
artillery / ɑr`tɪl(ə)ri / noun [uncount]
artisan / `ɑrtɪzən / noun [count]
artistry / `ɑrtɪstri / noun [uncount]
artless / `ɑrtləs / adjective
ascendancy / ə`sendənsi / noun [uncount]
ascertain / ,æsər`teɪn / verb [intransitive or transitive] FORMAL *
ascertain whether/what/how etc.: We need to ascertain whether the project is feasible.
ascertain the cause/nature/extent of something: Experts were unable to ascertain the cause of the accident.
ascetic 1 / ə`setɪk / adjective
ascetic 2 / ə`setɪk / noun [count]
╾ asceticism / ə`setɪ,sɪzəm / noun [uncount]
ascribe / ə`skraɪb / verb
 2 ascribe something to someone/something to believe that something is a typical quality of someone or something:
aseptic / eɪ`septɪk / adjective
ashen / `æʃn / adjective
asinine / `æsɪ,naɪn / adjective
askance / ə`skæns / adverb
look askance (at someone/something)
askew / ə`skju / adjective
asparagus / ə`sperəgəs / noun [uncount]
aspen / `æspən / noun [count]
Aspen / `æspən /
asperity / æ`sperəti / noun [uncount] VERY FORMAL
asphyxia / æs`fɪksiə / noun [uncount]
asphyxiate / æs`fɪksi,eɪt / verb [intransitive or transitive]
╾ asphyxiation / æs,fɪksi`eɪʃn / noun [uncount]
aspire / ə`spaɪr / verb [intransitive] *
aspire to be/do something: a number of film students who aspire to be documentary makers
assail / ə`seɪl / verb [transitive]
asthma / `æzmə / noun [uncount] *
assay / `æ,seɪ,   ə`seɪ / noun [count] SCIENCE
assent 1 / ə`sent / noun [uncount] FORMAL
assent 2 / ə`sent / verb [intransitive] FORMAL
assertive / ə`sɜrtɪv / adjective
assess / ə`ses / verb [transitive] **
assorted / ə`sɔrtəd / adjective
assuage / ə`sweɪdʒ / verb [transitive] FORMAL
assurance / ə`ʃʊrəns / noun *
assured / ə`ʃʊrd / adjective
asterisk 1 / `æstərɪsk / noun [count]
asterisk 2 / `æstərɪsk / verb [transitive]
asteroid / `æstə,rɔɪd / noun [count]
astigmatism / ə`stɪgmə,tɪzəm / noun [uncount] MEDICAL
╾ astigmatic / ,æstɪg`mætɪk / adjective
astral / `æstrəl / adjective
astray / ə`streɪ / adverb
astringent 1 / ə`strɪndʒənt / adjective
astringent 2 / ə`strɪndʒənt / noun [count]
asunder / ə`sʌndər / adverb LITERARY
athletics / æθ`letɪks / noun [uncount]
asylum / ə`saɪləm / noun **
atheism / `eɪθi,ɪzəm / noun [uncount]
atonal / ,eɪ`toʊnl / adjective
╾ atonality / ,eɪtoʊ`næləti / noun [uncount]
╾ atonally / ,eɪ`toʊnəli / adverb
atonal / ,eɪ`toʊnl / adjective
╾ atonality / ,eɪtoʊ`næləti / noun [uncount]
╾ atonally / ,eɪ`toʊnəli / adverb
atone / ə`toʊn / verb [intransitive] FORMAL
atrocious / ə`troʊʃəs / adjective
atrophy 1 / `ætrəfi / noun [uncount] MEDICAL
atrophy 2 / `ætrəfi / verb [intransitive or transitive]
attentive / ə`tentɪv / adjective
attenuate / ə`tenju,eɪt / verb [transitive] FORMAL
╾ attenuation / ə,tenju`eɪʃn / noun [uncount]
attest / ə`test / verb
attic / `ætɪk / noun [count]
attire / ə`taɪr / noun [uncount] FORMAL
formal/casual attire
attorney / ə`tɜrni / noun [count] ***
attrition / ə`trɪʃn / noun [uncount]
attrition rate/rate of attrition: Fifty volunteers left in the first year, a surprisingly high attrition rate.
atypical / ,eɪ`tɪpɪkl / adjective
audible / `ɔdɪbl / adjective
augury / `ɔgjəri / noun LITERARY
august / ɔ`gʌst / adjective FORMAL
August / `ɔgəst / noun [count or uncount] ***
aureole / `ɔri,oʊl / noun [count] LITERARY
auspices / `ɔspɪsəz / noun
auspicious / ɔ`spɪʃəs / adjective FORMAL
austere / ɔ`stɪr / adjective
authenticate / ɔ`θentɪ,keɪt / verb [transitive]
╾ authentication / ɔ,θentɪ`keɪʃn / noun [uncount]
authoritarian / ɔ,θɔrɪ`teriən / adjective
an authoritarian government/regime
authoritative / ɔ`θɔrɪ,teɪtɪv / adjective
authorization / ,ɔθərɪ`zeɪʃn / noun [count or uncount]
autobiography / ,ɔtoʊbaɪ`ɑgrəfi / noun [count]
autocracy / ɔ`tɑkrəsi / noun
autocrat / `ɔtə,kræt / noun [count]
autocratic / ,ɔtə`krætɪk / adjective
an autocratic boss/management style
╾ autocratically / ,ɔtə`krætɪkli / adverb
automation / ,ɔtə`meɪʃn / noun [uncount]
automaton / ɔ`tɑmətən / noun [count]
autonomous / ɔ`tɑnəməs / adjective
autopsy / `ɔ,tɑpsi / noun [count]
auxiliary 1 / ɔg`zɪljəri / adjective
auxiliary nurses/troops/pilots
auxiliary 2 / ɔg`zɪljəri / noun [count] *
avant-garde / ,ɑvɑŋ`gɑrd / adjective
avant-garde, the / ,ɑvɑŋ`gɑrd / noun
avuncular / ə`vʌŋkjələr / adjective
avarice / `ævərɪs / noun [uncount] FORMAL
╾ avaricious / ,ævə`rɪʃəs / adjective
╾ avariciously / ,ævə`rɪʃəsli / adverb
avenge / ə`vendʒ / verb [transitive]
aver / ə`vɜr / verb [transitive] VERY FORMAL
averse / ə`vɜrs / adjective
aversion / ə`vɜrʒn / noun [count or uncount] FORMAL
avert / ə`vɜrt / verb [transitive]
avert your eyes/gaze/head etc.
aviary / `eɪvi,eri / noun [count]
avid / `ævɪd / adjective
an avid reader/fan
╾ avidity / ə`vɪdəti / noun [uncount]
avocation / ,ævoʊ`keɪʃn / noun [count] FORMAL
avow / ə`vaʊ / verb [transitive] FORMAL
avowal / ə`vaʊəl / noun [count or uncount] FORMAL
awe 1 / ɔ / noun [uncount] *
be/stand in awe of someone: He is totally in awe of his father.
awe 2 / ɔ / verb
╾ awed / ɔd / adjective:
awl / ɔl / noun [count]
awning / `ɔnɪŋ / noun [count]
awry / ə`raɪ / adjective
axiom / `æksiəm / noun [count]
axle / `æksl / noun [count]
azure / `æʒər / adjective LITERARY