Where does “poltroonism” come from?

poltroonism (English) comes from English poltroon, from Middle French poltron, from Italian poltrone, from Italian poltro, from Vulgar Latin pulliter, from Latin pullus, from Proto-Indo-European polHwós, from Proto-Indo-European pelH- — pale, gray.

Ancestry of “poltroonism”, step by step

poltroonism traces back through two separate lines of ancestry.

via English poltroon

StepLanguageWordMeaning
1EnglishpoltroonAn ignoble or total coward; a dastard; a...
2Middle Frenchpoltroncoward
3Italianpoltronelazy, indolent, sluggish; lazy person, indolent...
4Italianpoltrountamed; indolent, lazy; bed
5Vulgar Latinpulliter
6LatinpullusA young animal; darling; dark-colored; dusky
7Proto-Indo-EuropeanpolHwóspale, gray
8Proto-Indo-EuropeanpelH-pale, gray

via English ism

StepLanguageWordMeaning
1EnglishismAn ideology, system of thought, or practice that...
2English-ismUsed to form nouns of action or process or result...
3Latin-ismus-ism
4Ancient Greek-ισμόςForms abstract nouns
5Ancient Greek-μόςForms abstract nouns
6Proto-Indo-European-mósCreates action/result nouns from verb stems
Every word from Proto-Indo-European pelH-Every word from Proto-Indo-European polHwósEvery word from Latin pullus