Where does “and(it)are” come from?

and(it)are (Vulgar Latin) comes from Latin ambitare, from Latin adito, from Latin adeō, from Interlingua deo, from French Dieu, from Middle French Dieu, from Old French deü, from Latin dēbēre — afterwards, post; by, at.

Ancestry of “and(it)are”, step by step

StepLanguageWordMeaning
1Latinambitarepresent active infinitive of *ambitō;...
2LatinaditoI go to or approach often; second-person singular...
3Latinadeōso, thus, so much
4Interlinguadeoa god, deity
5FrenchDieuGod; to God
6Middle FrenchDieuGod Christian deity
7Old FrenchdeüAlternative form of deu
8Latindēbēre—
9Latindēof; concerning; about
10Latinpostbehind; after, since, besides, except; behind,...
11Latinposteablative singular of postis
12Proto-Italicpostibehind, after
13Proto-Indo-Europeanpóstiafter
14Proto-Indo-Europeanpósafterwards, post; by, at

Words derived from “and(it)are”

Every word from Proto-Indo-European pós →Every word from Proto-Indo-European pósti →Every word from Proto-Italic posti →