Structure
Verb[stem]+ だす
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About だす
だす, or 出す in its kanji form is a verb that is regularly attached to the conjunctive form of other verbs. When it is connected in this way, it has the meaning of 'to suddenly do (A)', or 'to burst into (A)'.
To use this construction, simply add だす to the ます stem (conjunctive form) of the verb that you want to highlight as happening 'suddenly'.
Caution
Unlike はじめる, another common structure which means 'to begin', だす quite often has the nuance of being unintentional, or something that the subject cannot avoid doing (or cannot be controlled). On the other hand, はじめる expresses the direct intention of the subject to do (A).
Antonyms
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Examples
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あの子は急に泣き出した。
That child suddenly started crying.
面白いことを今思い出した。
I suddenly remembered something funny.
晴れていたのに、雨が急に降り出した。
Although it was clear, it suddenly began raining.
夜中に夫が急に餃子を作りだした。
My husband suddenly started to make dumplings in the middle of the night.
何も言わないで走り出した。
Without saying a word, he suddenly began running.
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だす
JGram
始める vs. だす
MaggieSensei
Offline
[DBJG] A Dictionary of Basic Japanese Grammar
Page 102
Tobira
Page 171
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