pitch in

Verb

idiomatic intransitive transitive

(transitive, intransitive, idiomatic) To help out; lend assistance; contribute; to do one's part to help. / To begin briskly.

Japanese Meaning

協力して手伝う、援助する、貢献する / 勢いよく始める

When the storm knocked out power, neighbors decided to pitch in to keep the elderly warm.

嵐で停電が起きたとき、近所の人たちは高齢者が暖かく過ごせるように手伝うことにしました。

Sense（1）

(transitive, intransitive, idiomatic) To help out; lend assistance; contribute; to do one's part to help.

If we all pitch in, we can raise enough money for the renovation of the church.

Sense（2）

To begin briskly.

pitches in

（ present singular third-person ）

pitching in

（ participle present ）

pitched in

（ participle past ）

pitched in

（ past ）