Where does “unvigorously” come from?

unvigorously (English) comes from English unvigorous, from English vigorous, from Old French vigrus, from Old French vigoros, from Latin vigorosus, from Latin vigor, from Latin -or, from Proto-Italic -ōs — Creates action nouns or result nouns from verbs;...

unvigorously (English): In an unvigorous manner

Definitions

  1. In an unvigorous manner

Ancestry of “unvigorously”, step by step

unvigorously traces back through two separate lines of ancestry.

via English unvigorous

StepLanguageWordMeaning
1EnglishunvigorousNot vigorous
2EnglishvigorousPhysically strong and active; Mentally strong and...
3Old Frenchvigrusstrong; hardy
4Old Frenchvigoros
5Latinvigorosus
6Latinvigorvigor, liveliness, activity; power, strength
7Latin-orused to form a third-declension masculine...
8Proto-Italic-ōsCreates masculine action nouns or result nouns...
9Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
10Proto-Indo-European-oss
11Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin vigor