expression
you are quite right; that's exactly right
Polite expression used to agree with someone's opinion or statement, often in formal or respectful conversation.
「この計画は見直すべきだと思います」「ごもっともです」
"I think we should reconsider this plan." "You are quite right."
na-adjective, noun
Polite adjectival use meaning something is understandable or justified; often used with な or に. Related to もっとも (尤も) sense 2.
See also: 尤も (もっとも)
彼が怒るのもごもっともだ。
It's quite natural for him to get angry.
ごもっともな意見ですね。
That's a very reasonable opinion.
もっとも (尤も) is the base word meaning 'reasonable' or 'plausible'; ごもっとも adds the honorific prefix ご for politeness.
Polite form of もっとも (尤も) with honorific prefix ご. The base word もっとも originally meant 'most' or 'extremely' and developed the sense of 'reasonable' from the idea of something being 'the most' understandable.