swear vb swore, sworn, swear·ing [Old English swerian]
vt
1: to utter or take solemnly
2 a: to assert as true or promise under oath
a sworn affidavit
b: to assert or promise emphatically or earnestly
swore to uphold the constitution
3 a: to put to an oath
b: to bind by an oath
vi: to take an oath
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.