swear

verbs

utter obscenities or profanities

"The drunken men were cursing loudly in the street"

blaspheme, curse, cuss, imprecate, swear

is derived from

is derived from

to declare or affirm solemnly and formally as true

"Before God I swear I am innocent"

affirm, assert, aver, avow, swan, swear, verify

is derived from

is derived from

promise solemnly; take an oath

swear

is derived from

see also

is a type of (narrower)

make a vow; promise

"He vowed never to drink alcohol again"

make a deposition; declare under oath

depone, depose, swear

is derived from

have confidence or faith in

"We can trust in God"; "Rely on your friends"; "bank on your good education"; "I swear by my grandmother's recipes"

bank, rely, swear, trust