Definition of “unsafe” - Learner’s Dictionary

unsafe

adjective uk us /ʌnˈseɪf/
DANGEROUS

dangerous:

The building is unsafe.
[ + to do sth ] The water was dirty and unsafe to drink.
IN DANGER

If you feel unsafe, you feel that you are in danger:

Many women feel unsafe on the streets at night.

(Definition of “unsafe” from the Cambridge Learner's Dictionary © Cambridge University Press)