Synonyms of impugn

1 Syllable

knock, blast, break, slam, cross, zing, smear, trash, zap, tar

2 Syllables

assails, deny, resist, question, gainsay, doubted, misdoubt, assail, gainsaid, gainsaying, queried, charging, impeach, attack

3 Syllables

negating, traduce, impeaching, countercheck, challenging, disproved, disprove, assailed, dispute, misgive, disavow, disputed, traverse, assailing, oppose, impeached, whistle-blow, challenged, impeaches, denouncing, contradict, denounced, negated, disproving, disaffirm, censured, negate

4 Syllables

contravened, negative, contravening, disavowing, contravene, denigrate, contradicting, contradicted, disavowed, denigrated, denigrating