Where does “impugn” come from?

Impugn comes from Middle French impugner, from Latin impugnāre, combining the prefix in- and pugnāre (to fight), ultimately deriving from Proto-Indo-European pewḱ- meaning to fight or strike.

impugn (English): To assault, attack; To verbally assault,...

Definitions

To assault, attack; To verbally assault,...

Ancestry of “impugn”, step by step

Step	Language	Word	Meaning
1	Middle French	impugner	to attack; to impugn
2	Latin	impugnō	to attack, fight against
3	Latin	im-	Alternative form of in-; form of "in"; in
4	Latin	īn-	un-, non-, not
5	Latin	în	in, at, on, upon, from (space)
6	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
7	Proto-Italic	en	in
8	Proto-Indo-European	h₁én	in

Words derived from “impugn”

impugner
impugnment
unimpugnable
impugnable
impugnation
unimpugnably

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Proto-Italic en →