had better

idiomatic informal with-infinitive

(idiomatic, with bare infinitive, informal) Should; ought to; need to; must.

Japanese Meaning

～したほうがいい / ～すべきだ

You had better finish your report before the meeting starts.

会議が始まる前に報告書を終わらせたほうがいい。

Sense（1）

(idiomatic, with bare infinitive, informal) Should; ought to; need to; must.

You had better finish that homework on time, if you want to get a good grade.