Meaning : Utter obscenities or profanities.

Example : The drunken men were cursing loudly in the street.

Synonyms : blaspheme, curse, cuss, imprecate

Meaning : To declare or affirm solemnly and formally as true.

Example : Before God I swear I am innocent.

Synonyms : affirm, assert, aver, avow, swan, verify

Meaning : Promise solemnly. Take an oath.

Meaning : Make a deposition. Declare under oath.

Synonyms : depone, depose

Meaning : Have faith or confidence in.

Example : 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.

Synonyms : bank, bet, calculate, count, depend, look, reckon, rely