also: なっていない
unacceptable; no good; inadequate
Colloquial negative of なる, used to say something is not up to standard, not working, or a complete failure. Often used in casual speech to criticize a situation, performance, or result.
This plan is no good.
His way of doing things is unacceptable.
That excuse is completely inadequate.
Kanji spelling is possible but very uncommon; learners should use kana.
Kanji spelling of the full form; rarely seen.
Contraction of なっていない, the negative te-iru form of なる (to become). The phrase literally means 'has not become', and by extension 'is not in an acceptable state'.