Impugn
Synonyms for impugn
verb criticize, challenge
    assail
    contravene
    knock
    deny
    blast
    traduce
    contradict
    question
    traverse
    cross
    resist
    attack
    break
    oppose
    negative
    smear
    negate
    trash
    slam
    gainsay
    zap
    dispute
    call into question
    come down on
    disaffirm
    put down
    run down
    zing
    tar
    cast aspersions upon
    cast doubt upon
    cut to shreds
    pin something on
    skin alive
    stick it to
    swipe at
    throw doubt on
    throw the book at
    thumb nose at
Antonyms for impugn
    compliment
    praise
    concede
    corroborate
    aid
    assist
    agree
    allow
    go along
    approve
    confirm
    stay
    help
    support
    join
    flatter
Read Also:
- Impugnable  Synonyms for impugnable adj questionable, unclear indecisive unsure problematic insecure suspicious precarious dubious uneasy unstable hazy undecided unsettled uncertain dicey debatable ambiguous borderline chancy contingent disreputable equivocal far-fetched fat chance fishy hazardous iffy inconclusive indefinite indeterminate indistinct long shot obscure open pending shady sneaky speculative suspect touch-and-go touchy clouded dubitable doubtable on thin ice unconfirmed […] 
- Impugned  Synonyms for impugn verb criticize, challenge assail contravene knock deny blast traduce contradict question traverse cross resist attack break oppose negative smear negate trash slam gainsay zap dispute call into question come down on disaffirm put down run down zing tar cast aspersions upon cast doubt upon cut to shreds pin something on skin alive […] 
- Impugnment  Synonyms for impugnment noun verbal assault criticism abuse aggression pugnacity belligerence combativeness censure denigration blame slander denunciation libel calumny vilification Antonyms for impugnment praise compliment commendation aid protection resistance shelter shield surrender sustenance reprisal submission health approval defense flight retreat support Synonyms noun disobedience, disregard provocation spite rebellion confrontation opposition contempt stump insurgency summons unruliness […] 
- Impugnments  Synonyms for impugnments noun verbal assault criticism abuse aggression pugnacity belligerence combativeness censure denigration blame slander denunciation libel calumny vilification impugnment Antonyms for impugnments praise compliment commendation aid protection resistance shelter shield surrender sustenance reprisal submission health approval defense flight retreat support Synonyms noun disobedience, disregard provocation spite rebellion confrontation opposition contempt stump insurgency summons […] 
- Impuissant  Synonyms for impuissant adj not having talent, skill weak impotent unfit incapable inadequate helpless powerless clumsy incapacitated incompetent ineffectual inefficacious inefficient inept inoperative out of commission unqualified unskilled sidelined not able hog-tied no can do no good not cut out for not equal to not up to unfitted can’t cut it can’t hack it can’t […] 
