swear
verb
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”
Source: WordNet 3.1, Princeton University
