“+ verb
Etymology: Middle English untrussen, from un- (II) + trussen to truss
transitive verb
1. archaic : to loose from a fastening : set free
2. archaic
a. : untie , unfasten , undo — used in the phrase untruss one's points ; compare point I 10a
b. : undress
intransitive verb
archaic : to unfasten or take off one's clothes and especially one's breeches
is condemned for untrussing — Shakespeare