出す・だす

Auxiliary Verb (Group 1) (Basic ㊦ 102)

Something that has been latent is realised.

Equivalent: Out; begin to; start to

車が動き出した・出しました。: The car started to move.
急に雨が降り出した。: Suddenly it began to rain.
一歳になって初めて歩き出した。: He started to walk only after he became a year old.
そのアイディアは誰が考え出したんですか。: Who thought out that idea?
一時間ぐらいかけてとうとうその本屋を探し出した。: After spending about an hour, I finally located that bookstore.

Formation

V ます	話し出す	Someone starts to talk
	食べ出す	Someone starts to eat

Notes

1. 出す in Verbます+出す is used as an auxiliary verb. When it is used as a full verb, it means 'cause something to become visible'.

2. Verbます+出す is normally ambiguous; one meaning is '~ out' and the other is 'begin to ~'. Thus, 作り出す means 'turn out' or 'begin to make'.

3. Verbます+出す conjugates as a Group 1 verb.

	⎧なさい	informal, negative, nonpast
	⎪します	formal, nonpast
話し出	⎪す	informal, nonpast
	⎨せば	conditional
食べ出	⎪そう	volitional
	⎪して	て form
	⎩した	informal, past

4. Verbます+終わる 'finish ~ing' is an antonym of Verbます+出す/始める.

【Related Expression】

出す in the sense of 'begin to ~' is different from 始める in that the former indicates a non-volitional and abrupt beginning while the latter is more broadly used. Thus,

[1]

そろそろ歩き始めましょう/*歩き出しましょうか。
It's getting late. Shall we begin to walk?

[2]

私達が歩き始めた/歩き出した時山田逹が来た。
When we started to walk, Yamada and his company came.

[3]

どうしてか分からなかったが、男は急におこり出した/??おこリ始めた。
I don't know why, but the man suddenly started to get angry.