The Collaborative International Dictionary
Impugnation
Impugnation \Im`pug*na"tion\, n. [L. impugnatio: cf. OF. impugnation.] Act of impugning; opposition; attack. [Obs.]
A perpetual impugnation and self-conflict.
--Bp. Hall.
Wiktionary
impugnation
n. 1 The act of impugning 2 (context legal English) The act of appealing or revoke