The government's oppressive measures restricted the citizens' freedom of speech and expression.

The suffix for oppressive is -ive.

The suffix of "oppressive" is "-ive."

My father is too oppressive. My family is very oppressive. There's 2 of them.

Unreasonably burdensome; unjustly severe, rigorous, or harsh; as, oppressive taxes; oppressive exactions of service; an oppressive game law., Using oppression; tyrannical; as, oppressive authority or commands., Heavy; overpowering; hard to be borne; as, oppressive grief or woe.