Thursday UK /ˈθɜːz.deɪ/US /ˈθɝz.deɪ/noun 1adverb 1forms 1 noun1 •the day between Wednesday and FridayBut for satisfaction pure and deep, for balance in pleasure and comfort, Thursday canʼt be beat. — 1992 adverb1 •(US, Canada) On Thursday. formsThursdays