köken: Learned borrowing from Latin cacoēthes, from Ancient Greek κακόηθες (kakóēthes), neuter singular of κακοήθης (kakoḗthēs, “ill-disposed”), from κακός (kakós, “bad”) + ἦθος (êthos, “disposition, nature”).
Borrowed from French tic and its descendants [Polish tik, Russian ти́к (tík), Italian tìc, English tic, German Tic, Yiddish טיק (tik)], ultimately onomatopoeic in origin. Compare Spanish tic, Catalan tic, Portuguese tique.