betide

verb2

1. •
   (literary, old-fashioned) Often used in a prediction (chiefly in woe betide) or a wish: to happen to (someone or something); to befall.

   • Whether good or ill betide you, trust in yourself.
2. •
   (literary, old-fashioned) Chiefly in the third person: to happen; to take place; to bechance, to befall.

   • If he were dead what would betide of me. — 1593