Phrasal Verbs
- 1(informal) to know about what someone has done wrong She knew the police would be onto them.
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
- 2to be talking to someone, usually in order to ask or tell them something They've been onto me for ages to get a job.
to know about something or be in a situation that could lead to a good result for you Scientists believe they are onto something big. She's onto a good thing with that new job.