N3 Time, Sequences, and Change

~出だす: meaning, usage and examples

~出だす means: to suddenly start... / to begin...

Updated 9 November 2026 · By the My Senpai team · Spotted a mistake? Tell us

Examples

1. 急きゅうに雨あめが降ふり出だした。

   It suddenly started raining.

2. 大おおきな音おとに驚おどろいて、赤あかちゃんが泣なき出だした。

   The baby was startled by a loud noise and started crying.

3. 犬いぬが急きゅうに走はしり出だしました。

   The dog suddenly started running.

4. 先生せんせいの話はなしを聞きいて、みんなが笑わらい出だしました。

   Everyone burst out laughing at the teacher's story.

When to use it

Attach 出だす to the ます-stem of a verb to say that an action suddenly starts, often without warning. 雨あめが降ふり出だした means "It started raining," with a feeling that it began all at once. It is common with crying, laughing, running, raining and talking: actions that burst into motion.

Nuance

出だす suggests a sudden or unexpected start, so it often appears with 急きゅうに or 突然とつぜん. It is natural for actions you observe happening, but it is not used for invitations or plans: 食たべ出だしましょう is wrong. It conjugates as a regular Group 1 verb: 出だした, 出だして.

Compare

始はじめる is the neutral "start doing," including planned actions: 九時くじから書かき始はじめた / 勉強べんきょうを始はじめましょう. 出だす adds suddenness: 子こどもが急きゅうに泣なき出だした. Use 始はじめる for intentional starts and 出だす for starts that burst out on their own. 降ふり始はじめた, but 降ふり出だした sounds more abrupt.

Tip: Think "burst out": 泣なき出だす (burst into tears), 笑わらい出だす (burst out laughing). Do not use 出だす with ましょう or the volitional form; use 始はじめる instead.