Webster's Revised Unabridged Dictionary · 1913

Dissever

Dissever , transitive verb

[Old English dessevrer; pref. des- (Latin dis-) + sevrer to sever, French sevrer to wean, Latin separate to separate. In this word the prefix is intensive. See Dis-, and Sever.]

To part in two; to sever thoroughly; to sunder; to disunite; to separate; to disperse.
The storm so dissevered the company... that most of therm never met again. — Sir P. Sidney
States disserved, discordant, belligerent. — D. Webster

Dissever , intransitive verb

To part; to separate. — Chaucer