Betide/bɪˈtaɪd/ Definition 1 of 1Pro Tip 1/3Negative Connotation Betide often indicates a bad outcome or warning of negative consequences. You didn't finish your report? Woe betide you when the boss finds out! Pro Tip 2/3Archaisms and Literature Betide sounds old-fashioned and is more common in literary or historical contexts. Betide those who cross the threshold of the cursed tomb! Pro Tip 3/3Use with 'Woe' 'Woe betide' is a fixed expression often used to issue a stern warning. Woe betide the student who forgets their homework.