get one's ass in gear

Verb

US idiomatic

(US, idiomatic) To exert effective effort; to get going; to get moving; to start producing.

Japanese Meaning

急いで行動を開始する / すぐに動き出す / 全力で取り組む

When one realizes the deadline is tomorrow, it's time to get one's ass in gear and finish the work.

締め切りが明日だと気づいたら、本腰を入れて仕事を終わらせる時だ。

Sense（1）

(US, idiomatic) To exert effective effort; to get going; to get moving; to start producing.

gets one's ass in gear

（ present singular third-person ）

getting one's ass in gear

（ participle present ）

got one's ass in gear

（ past ）

gotten one's ass in gear

（ participle past ）