Meaning of “oppress” - Learner’s Dictionary

oppress

verb [ T ] uk us /əˈpres/
LIMIT FREEDOM

to treat a group of people in an unfair way, often by limiting their freedom:

[ often passive ] Women were oppressed by a society which considered them inferior.
MAKE ANXIOUS

to make someone feel anxious:

The thought of tomorrow's interview oppressed him.

(Definition of “oppress” from the Cambridge Learner’s Dictionary © Cambridge University Press)