Definition of "had better" in English

Verb

1. Should; ought to; need to; must.

   • You had better finish that homework on time, if you want to get a good grade.
   • “Will we get it finished?” / “We had better.”
   • The project had better get finished by the current deadline.
   • I ought to go and see Mike one of these days. - Well, you'd better do it soon, because he’s leaving for Tanzania at the end of the week.