impugnation noun. [ɪmpʌg'neɪʃ(ǝ)n] Now rare or obsolete. LME.
[Latin impugnatio(n-), from impugnat- pa. ppl stem of impugnare IMPUGN: see -ATION.]
1. The action of attacking or assaulting a person; spiritual assault, temptation. LME-M17.

2. The action of impugning something or someone; calling into question, disputing. LME.

[TahlilGaran] English Dictionary ▲