Where does “butlers” come from?

Butler comes from Middle English boteler, from Old French butiller, a derivative of Old French but (cask) with the suffix -ier, ultimately from Latin -arius via Latin -are and Old Latin -os.

butlers (English): plural of butler

Definitions

plural of butler

Ancestry of “butlers”, step by step

Step	Language	Word	Meaning
1	English	butler	A manservant having charge of wines and liquors;...
2	Middle English	boteler	butler
3	Old French	butiller	butler
4	Old French	boteille	bottle
5	Latin	butticula	bottle
6	Latin	buttis	cask, barrel
7	Ancient Greek	πυτίνη	a flagon, flask
8	Proto-Indo-European	bʰeHw-	to swell, puff

Every word from Proto-Indo-European bʰeHw- →Every word from Ancient Greek πυτίνη →Every word from Latin buttis →