Where does “irrepugnable” come from?

irrepugnable (English) comes from English repugn, from Latin repugnō, from Latin rĕ-, from Latin prōdūcō, from Latin prō-, from Proto-Italic *pro-, from Proto-Indo-European pro-, from Proto-Indo-European por- — passed , crossed.

irrepugnable (English): That cannot be repugned; not repudiable;...

Definitions

  1. That cannot be repugned; not repudiable;...

Ancestry of “irrepugnable”, step by step

irrepugnable traces back through 3 separate lines of ancestry.

via English repugn

StepLanguageWordMeaning
1EnglishrepugnTo oppose or resist
2Latinrepugnōto fight against
3Latinrĕ-back, backwards
4Latinprōdūcōto lead or bring forth, forward or out
5Latinprō-forward direction, forward movement
6Proto-Italic*pro-pro- see the Latin entry for further meanings
7Proto-Indo-Europeanpro-toward, forward
8Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
9Proto-Indo-Europeanper-before, in front; first; to go through
10Proto-Indo-Europeanpr̥tóspassed , crossed

via English able

StepLanguageWordMeaning
1EnglishableEasy to use; Suitable; competent; Liable to
2Middle Englishablecapable, expert, qualified, skilful, competent
3Old Frenchableable; capable
4Latinhabilisable to have/possess/maintain; having sufficient...
5Latin-ilis-ile
6Proto-Italic-elis
7Proto-Indo-European-elis
8Proto-Indo-European-lósForms agent nouns from verbal roots

via English ir

StepLanguageWordMeaning
1Englishir
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Latin rĕ-
irrepugnable — Etymology, Origin & Word History | Etymology Explorer