assert

verb

1.
2.
to declare or affirm solemnly and formally as true
affirm aver avow swan swear verify
Agent:
asserter
Event:
assertion
Derived from:
assertable asserter assertion
3.
insist on having one's opinions and rights recognized
put forward
Derived from:
assertive
4.
postulate positively and assertively
insist
Event:
assertion
Derived from:
assertable assertion