should; had better doUsed to recommend doing something. The pattern is verb past form + 方がいい, literally indicating that one option is better; it can sound fairly direct depending on context. The exact term した方がいい means “should do” or “it would be better to do.”
JA: その仕事は後に延ばすより今した方がいい。
EN: You should do that work now rather than put it off.