ないではいられない
- 1Cannot help doing something as a natural reaction to a strong emotion.Ex. 1
- 2Cannot resist doing something even though one wants or intends to hold back.Ex. 2
This browser can't play pronunciations (needs Safari 18.4 or later, or Chrome / Edge / Firefox).
Typically describes the speaker's own uncontrollable reactions or thoughts, such as crying, laughing, speaking out, thinking something, or giving in to temptation. It appears in both conversation and writing. It means the same as ずにはいられない but sounds slightly softer and more conversational. Unlike てたまらない or てしょうがない, which describe an intense feeling itself, it focuses on something one cannot stop oneself from doing.
Note that non-past third-person statements usually add ようだ or らしい, but past narration like 彼は涙を流さないではいられなかった is fine.
Do not use it for actions done out of duty or external obligation, since it expresses an internal, uncontrollable urge.
Do not attach it to adjectives or nouns; it follows verbs, including mental verbs such as 思う (思わないではいられない).
- ずにはいられないN3「ずにはいられない」has the same meaning and is generally interchangeable, though slightly stiffer and more formal. It attaches by dropping 「ない」 from the ない-form and adding 「ずにはいられない」; with 「する」, say 「せずにはいられない」.
- ないではおかない / ずにはおかないN1「ないではおかない」expresses the determination that something 'must' happen, or that something will inevitably provoke a reaction in others (often with the causative form); it does not mean being unable to resist oneself, so it is not interchangeable. Only the variant 「ずにはおかれない」 can mean 'cannot help but', and it is rather formal.
- てたまらないN2「てたまらない」describes a feeling or physical sensation itself being so strong it is unbearable, attaching to adjectives, the て-form of verbs, and so on; 「ないではいられない」describes being unable to resist performing an action and attaches only to the verb ない-form. They cannot be directly interchanged.
- てならないN2「てならない」expresses a feeling, sensation, or thought welling up uncontrollably (including 'cannot help but feel...'), not being unable to resist doing something; it attaches to the て-form of verbs and to adjectives, and is rather formal. The two are generally not interchangeable.
- てしょうがないN3「てしょうがない」describes extremely strong feelings, desires, or physical sensations, attaching to the て-form of verbs, 「たくて」, or adjectives, and is rather colloquial; 「ないではいられない」describes being unable to resist doing something and attaches to the verb ない-form, so direct substitution is not advisable.
ずにはいられない has the same meaning but is a bit more literary. ないではおかない / ずにはおかない means something will inevitably cause a result or someone is determined to do something, not a personal urge, while てたまらない, てならない and てしょうがない express an overwhelming feeling or sensation rather than an action one cannot stop oneself from doing.
