impugn
Pronunciation: /ɪmˈpjuːn/
Definition of impugn
verb
Origin:
late Middle English (also in the sense 'assault, attack physically'): from Latin impugnare 'assail', from in- 'towards' + pugnare 'fight'
Spelling help
Remember that impugn is spelled with a g before the n, although it is not heard when you say the word.