Where does “tic-” come from?

tic- (Middle English) comes from Middle English tiche, from Old English tiċċen, from Proto-West Germanic tikkīn, from Proto-West Germanic tigā — she-goat.

Ancestry of “tic-”, step by step

tic- traces back through two separate lines of ancestry.

via Middle English tiche

StepLanguageWordMeaning
1Middle Englishtiche
2Old Englishtiċċenyoung goat; kid; goatling
3Proto-West Germanictikkīnkid, young goat
4Proto-West Germanictigāshe-goat

via Middle English tichen

StepLanguageWordMeaning
1Middle Englishtichena young goat; goatling; kid

Words derived from “tic-

Every word from Proto-West Germanic tigāEvery word from Proto-West Germanic tikkīnEvery word from Old English tiċċen