Verbs

(v)curse, cuss, blaspheme, swear, imprecateutter obscenities or profanities“The drunken men were cursing loudly in the street”
(v)affirm, verify, assert, avow, aver, swan, swearto declare or affirm solemnly and formally as true“Before God I swear I am innocent”
(v)swearpromise solemnly; take an oath
(v)swear, depose, deponemake a deposition; declare under oath
(v)count, bet, depend, swear, rely, bank, look, calculate, reckonhave 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”