Where does “accesissimo” come from?

accesissimo (Italian) comes from Italian acceso, from Latin accensus, from Latin accenseo, from Latin ad-, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en — in.

Ancestry of “accesissimo”, step by step

StepLanguageWordMeaning
1Italianaccesolit, on; bright; enthusiastic, passionate, ardent
2Latinaccensuslit, kindled; inflamed, aroused
3LatinaccenseoI reckon to or among, add to
4Latinad-to; usually prefixed to verbs, in which cases it...
5Latinīn-un-, non-, not
6Latinînin, at, on, upon, from (space)
7Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
8Proto-Italicenin
9Proto-Indo-Europeanh₁énin
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Latin ad-