Where does “unincidental” come from?

unincidental (English) comes from English incidental, from English incident, from Middle French incident, from Old French incident, from Latin incidens, from Latin incidere, from Latin īn-, from Latin în — in.

unincidental (English): Unmarked by incidents; uneventful

Definitions

  1. Unmarked by incidents; uneventful

Ancestry of “unincidental”, step by step

unincidental traces back through two separate lines of ancestry.

via English incidental

StepLanguageWordMeaning
1EnglishincidentalLoosely associated; existing as a byproduct,...
2EnglishincidentAn event or occurrence; A event that is...
3Middle Frenchincident
4Old Frenchincident
5Latinincidensfalling upon; cutting up, hewing open;...
6Latininciderepresent active infinitive of incidō;...
7Latinīn-un-, non-, not
8Latinînin, at, on, upon, from (space)
9Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
10Proto-Italicenin
11Proto-Indo-Europeanh₁énin

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en