keep off phrasal verb ( see also ↑ keep )
1 . keep something ↔ off to prevent something from touching or harming something:
She held an old piece of cloth over them both to keep the rain off.
keep something off something
How are we going to keep the flies off this food?
2 . keep your hands off somebody/something used to tell someone not to touch someone or something:
Keep your hands off me!
3 . keep (somebody) off something to not eat, drink, or take something that is bad for you, or to stop someone else from eating, drinking, or taking it:
Keep off fatty foods.
a programme aimed at keeping teenagers off drugs
4 . keep off something especially British English to avoid talking about a particular subject, especially so that you do not upset someone SYN avoid , stay off
5 . keep something ↔ off if you keep weight off, you do not get heavier again after you have lost weight
6 . British English if rain keeps off, it does not fall