Loos
loose
loosen
unbar
unbind
unbolt
unbridle
unbuckle
uncage
unchain
unfetter
ungag
unhandcuff
unhobble
unlash
unlatch
unleash
unlock
unloose
unloosen
unmanacle
unmuzzle
unpen
unpinion
unshackle
unstrap
untie
untruss
unyoke