Definition of Swear

Verb: swear (swore,sworn) swehr

Utter obscenities or profanities
"The drunken men were swearing loudly in the street";
- curse, cuss, blaspheme, imprecate, eff [Brit], eff and blind [Brit]
To declare or affirm solemnly and formally as true
"Before God I swear I am innocent";
- affirm, verify, assert, avow, aver, swan
Promise solemnly; take an oath
Make a deposition; declare under oath
- depose, depone
Have confidence or faith in
"I swear by my grandmother's recipes";
- trust, rely, bank