Where does “alter” come from?

alter (Middle English) comes from Old English alter, from Latin altare, from Latin adolere, from Latin adoleo, from Latin ad-, from Latin īn-, from Latin în, from Latin en — in.

Ancestry of “alter”, step by step

alter traces back through two separate lines of ancestry.

via Old English alter

StepLanguageWordMeaning
1Old Englishalter
2Latinaltarepresent active infinitive of altō; altar, fitting...
3Latinadolerepresent active infinitive of adoleō;...
4LatinadoleoI emit an odor, smell; I magnify or pile up with...
5Latinad-to; usually prefixed to verbs, in which cases it...
6Latinīn-un-, non-, not
7Latinînin, at, on, upon, from (space)
8Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
9Proto-Italicenin
10Proto-Indo-Europeanh₁énin

via Old English altar

StepLanguageWordMeaning
1Old Englishaltaraltar
2Latinaltārealtar, fitting for burnt offerings
3Latinadoleōto emit an odor, smell
4Latinoleō
5Proto-Italicoleōto stoke a fire by burning a sacrifice
6Proto-Indo-Europeanh₂oléye-
7Proto-Indo-Europeanh₂él-to grow, nourish
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Latin ad-
alter — Etymology, Origin & Word History | Etymology Explorer