ˈswȯ(ə)rn, ˈswȯ(ə)n adjective
Etymology: Middle English sworen, sworn, from past participle of sweren to swear
1.
a. : bound by an oath : avowed
now my sworn friend, and then mine enemy — Shakespeare
specifically : pledged by an oath of chivalry to share each other's fortunes, good or bad — used formerly of companions in arms
according to an early tradition became his sworn brother — F.M.Stenton
b. : serving under an official oath of office
sworn jury
all loads of gravel … are to be accompanied by weight slips signed by sworn weighers — Springfield (Massachusetts) Union
c. : certified under oath : attested
sworn evidence
the sworn outlay … was $128,300 — S.H.Adams
2. : as firmly established as if bound by oath : confirmed , inveterate
a sworn conservative