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Not needed or required; unnecessary.
この機能は不要です。
This feature is unnecessary.
不要なものは捨ててください。
Please throw away unnecessary things.
Often used to indicate that something is not required or needed.
不要 is often used to describe things that are not needed or required.
From 不 (fu, 'not') + 要 (you, 'need').
Can be used as an adjective (不要な) or as a standalone adjective (不要).