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is merely

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phrase Rare #22,325
is merely A formal, polite expression meaning that something is nothing more than or only what was mentioned. It follows a noun or noun phrase.
KO: 그것은 작은 실수에 불과합니다.
EN: It is merely a small mistake.

증인의 추정에 불과합니다

It is merely the witness’s conjecture.

— 어 퓨 굿 맨 (1992)