～出す

About

The verb 出だす can be combined with a verb's stem form to express that an action "starts suddenly".

～出だす tends to be used for actions that aren't in the speaker's control, or that happen unintentionally/suddenly. This means that one should avoid combining ～出だす with volitional verbs, or phrases that indicate the speaker's intent. ～出だす should also be avoided when making requests.

～出だす is often used with verbs that express the weather, sudden emotions like laughing, smiling, or crying, or other actions that aren't considered controllable.

Summary

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  Combine ～出だす with a verb's stem form to express that said verb "starts"

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  ～出だす is usually combined with uncontrollable, or sudden verbs