utter obscenities or profanities; "The drunken men were cursing loudly in the street"
to declare or affirm solemnly and formally as true; "Before God I swear I am innocent"
promise solemnly; take an oath
make a deposition; declare under oath
have faith or confidence in; "you can count on me to help you any time"; "Look to your friends for support"; "You can bet on that!"; "Depend on your family in times of crisis"