不够 (bù gòu): Not enough (Verb, Adverb) — Meaning & Stroke Order

The teacher rejected my suggestion, saying it wasn't practical enough.

He is worried about tomorrow's exam, fearing that he hasn't prepared enough.

Lack of time constrains our plan.

The committee rejected the proposal because it was not well-developed.

His viewpoint is limited by personal experience and is not comprehensive enough.