Where does “aisille” come from?

aisille (Middle English) comes from Old French aisil, from Late Latin acetillum, from Latin acētum, from French -ate, from Latin -ātus, from Proto-Italic -ātos, from Proto-Indo-European -éh₂tos — Forms adjectives from nouns, indicating the possession of a thing or a quality.

Ancestry of “aisille”, step by step

Step	Language	Word	Meaning
1	Old French	aisil	—
2	Late Latin	acetillum	—
3	Latin	acētum	vinegar
4	French	-ate	ate
5	Latin	-ātus	ed
6	Proto-Italic	-ātos	—
7	Proto-Indo-European	-éh₂tos	Forms adjectives from nouns, indicating the possession of a thing or a quality

Every word from Proto-Indo-European -éh₂tos →Every word from Latin -ātus →Every word from French -ate →