English
impugnable
From impugn + -able.
Formed from impugn + -able
Proto-Indo-European *pewǵ- ‘prick, punch’
…
Latin pugnus ‘fist’
Latin pugnō ‘fight’
Latin impugnō ‘to attack, fight against’
Middle French impugner ‘to attack’
English impugn
Today it means
adj That can be impugned; open to (verbal) attack, open to question.
Language periods are conventional ranges, not dates for this word.
Etymograph / impugnable