のももっともだ
- 1It is only natural or understandable that someone feels or reacts this way, given the stated reason.Ex. 1
- 2It is no wonder a certain state or condition has come about, considering the circumstances just described.Ex. 2
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Expresses the speaker's judgment that someone's feelings, reaction, or condition are reasonable, often with sympathy or agreement. A reason clause with のだから, ので, or the て-form usually comes first and justifies the conclusion. It is used in both conversation and writing, typically when commenting on another person's situation. It is softer and more sympathetic than て当然だ.
Do not drop の before もっともだ, because the clause must be nominalized with の before も can attach.
Learners should use な, not だ, after non-past な-adjectives and nouns, though past だった attaches directly, as in 不安だったのももっともだ.
Note that the pattern sounds most natural when the reason justifying the reaction is stated or clear from context.
- わけだN3「わけだ」can also be translated as 'no wonder,' but it focuses on logically drawing a conclusion from a reason or premise—a moment of realization—and carries no sympathy or endorsement of someone's reaction; it can also express conclusions derived by calculation. It does not attach after 「のも」.
- て当然だN2「て当然だ」attaches to the て-form and can also be used for results or reactions, but its tone is more assertive, emphasizing that something 'should naturally be so,' not merely that it is understandable. When evaluating emotional reactions, the two are roughly interchangeable but differ in nuance.
- ことだからN2「ことだから」attaches to 「名詞＋の」 and infers someone's behavior based on knowledge of their personality, often paired with 「はずだ」 or 「きっと」; 「のももっともだ」attaches after a clause to express that a reaction is reasonable, so the two cannot be interchanged.
- からこそN2「からこそ」attaches after a cause and emphasizes 'it is precisely because of this cause that the following holds,' often with an assertive nuance; 「のももっともだ」attaches after results such as emotions or reactions to endorse them as reasonable. The two cannot be interchanged.
- というものだN2「というものだ」asserts the essence of something or evaluates a specific action, meaning 'this is exactly / nothing short of...' and often carries criticism; 「のももっともだ」endorses emotions, reactions, or actions as reasonable. 「というものだ」attaches to nouns and na-adjective stems without adding 「な」, and the two cannot be interchanged.
Unlike わけだ, which draws a logical conclusion, のももっともだ expresses the speaker's sympathetic judgment that a reaction is reasonable, and て当然だ asserts more strongly that something is a matter of course. ことだから bases a judgment on a person's known character, からこそ emphasizes the reason itself, and というものだ states a general truth or the speaker's firm assertion.
