Where does “deexcitate” come from?

deexcitate (English) comes from English excitate, from Latin excitatus, from Latin excitō, from Latin excieo, from Latin ex-, from Latin e, from Latin ex, from Latin commūnicō — whale, sea monster; abyss.

Ancestry of “deexcitate”, step by step

deexcitate traces back through two separate lines of ancestry.

via English excitate

StepLanguageWordMeaning
1EnglishexcitateTo excite
2Latinexcitatusroused, awoken, summoned, having been summoned;...
3Latinexcitōto call forth: to rouse, awaken, summon
4LatinexcieoAlternative form of exciō; call out, arouse,...
5Latinex-out, away; throughout; thoroughly
6LatineThe name of the letter "E"; out of, from
7LatinexA name of the letter "X"; out of, from
8Latincommūnicōto impart, share
9Latincommūniscommon, commonplace, ordinary, general, universal, shared, shared alike, of both sides, belonging to two or more together
10Old Latincom(m)oinis
11Proto-Italickommoiniscommon
12Proto-Indo-Europeanḱom-moy-ni-held in common
13Proto-Indo-Europeanḱómbeside, near, by, with
14Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
15Middle Englishkyt
16Russianкитwhale; genitive plural of ки́та
17Old Church Slavonicкитъwhale
18Ancient Greekκῆτοςwhale, sea monster; abyss

via English de

StepLanguageWordMeaning
1EnglishdeTo do; Pronunciation spelling of the; A...
2Chinese
3Mandarin德意志
4GermanDeutschGerman
5Old High Germandiutsch
6Old High GermandiutiscAlternative form of diutisk; popular, vernacular;...
7Proto-West Germanicþiudiskof the people, popular, vernacular
8Proto-Germanicþiudiskazof the people, popular; of the tribe
9Proto-Germanicþeudōpeople, tribe
10Proto-Indo-Europeantewtéh₂people, tribe
11Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong
Every word from Ancient Greek κῆτοςEvery word from Old Church Slavonic китъEvery word from Russian кит