Possible Results:
hubiere impugnado
-I will have challenged
Future perfect subjunctive yo conjugation of impugnar.
Future perfect subjunctive él/ella/usted conjugation of impugnar.

impugnar

TRANSITIVE VERB
(legal)-to challenge
Synonyms for impugnar
Antonyms for impugnar
TRANSITIVE VERB
(to contradict)-to refute
Synonyms for impugnar
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