Where does “commentatress” come from?

commentatress (English) comes from English commentator, from English comment, from Middle English coment, from Old French coment, from Old French -ment, from Latin -mentum, from Latin -menta, from Proto-Indo-European -mn̥ — Creates action nouns or result nouns from verbs.

Ancestry of “commentatress”, step by step

commentatress traces back through two separate lines of ancestry.

via English commentator

StepLanguageWordMeaning
1EnglishcommentatorA person who comments; especially someone who is...
2EnglishcommentA spoken or written remark; A remark embedded in...
3Middle Englishcoment
4Old Frenchcomentcommentary
5Old French-mentUsed to form adverbs, most of the time equivalent...
6Latin-mentuminstrument, medium, or result of; e.g....
7Latin-mentanominative plural of -mentum; accusative plural...
8Proto-Indo-European-mn̥Creates action nouns or result nouns from verbs

via English ess

StepLanguageWordMeaning
1EnglishessThe name of the Latin-script letter S; Something...
2Germanessfirst-person singular present of essen; singular...
3Proto-Germanicatiska-grainfield
4Proto-Indo-Europeanh₂edos-sort of cereal, grain
Every word from Proto-Indo-European -mn̥