get up to

Verb

To do something, especially something that is forbidden or improper.

Japanese Meaning

禁じられている、もしくは不適切な行動をする／悪さを働く

I wondered what the kids would get up to while I was away.

留守の間、子供たちがどんな悪さをするのか気になった。

Sense（1）

To do something, especially something that is forbidden or improper.

Recently he's been getting up to all sorts of mischief.

gets up to

（ present singular third-person ）

getting up to

（ participle present ）

got up to

（ past ）

got up to

（ UK participle past ）

gotten up to

（ US participle past ）