transitive verbforswore , forsworn, forswearing
- to renounce on oath; promise earnestly to give up
- to deny earnestly or on oath
Origin of forswearMiddle English forswerien ; from Old English forswerian: see for- and amp; swear
verbfor·swore , for·sworn , for·swear·ing, for·swears
- a. To decide or declare that one will not or will no longer engage in (an activity or habit, for example): a political group that has forsworn violence.b. To decide or declare that one will not or will no longer use or be associated with (something): “He had cast in his lot with the lions and forsworn the lambs” (Robert Louis Stevenson).c. To disavow under oath: “He was forced to take an oath forswearing heretical views” (Garry Wills).
- To make (oneself) guilty of perjury.
Origin of forswearMiddle English forsweren, from Old English forswerian : for-, wrongly; see for– + swerian, to swear; see swear.
(third-person singular simple present forswears, present participle forswearing, simple past forswore, past participle forsworn)