un-2 /ən, ən
/ ▸ prefix 1 (added to verbs) denoting the reversal or cancellation of an action or state: untie
unsettle.
2 (added to verbs) denoting deprivation, separation, or reduction to a lesser state: unmask
unman.
▪ (added to verbs) denoting release: unburden
unhand.
– ORIGIN Old English un-, on-, of Germanic origin; related to Dutch ont- and German ent-.