keep to something phrasal verb ( see also ↑ keep )
1 . to stay on a particular road, course, piece of ground etc:
It’s best to keep to the paths.
2 . to do what has been decided in an agreement or plan, or what is demanded by law:
Keep to the speed limits.
3 . keep to the point/subject etc to talk or write only about the subject you are supposed to be talking about
4 . keep something to something to prevent an amount, degree, or level from becoming higher than it should:
Costs must be kept to a minimum.
5 . keep something to yourself to not tell anyone about something:
I’d appreciate it if you kept it to yourself.
6 . keep to yourself ( also keep yourself to yourself British English ) to live a very quiet private life and not do many things that involve other people