be up to

be up to something

to be doing or planning something, often secretly We think those boys are up to something, or they wouldn't be behaving so suspiciously. (often used in questions) What are you up to in there?

Common Names:

Name	Pronounced	Usage
RozÁLia	-	Hungarian
Wolodymyr	-	Ukrainian
Liouba	-	Russian
Dejan	-	Serbian, Croatian, Slovene, Macedonian
Burgess	['bə:dʒis]
Haggai	HAG-ee-ie (English), HA-gie (English)	Biblical