Open English Wordnet
Verbs
(v)loosen, loosemake loose or looser“loosen the tension on a rope” (v)relax, loosenmake less severe or strict“The government relaxed the curfew after most of the rebels were caught” (v)relax, loosenbecome less severe or strict“The rules relaxed after the new director arrived” (v)untie, undo, loosencause to become loose“undo the shoelace”,
“untie the knot”,
“loosen the necktie” (v)loosenmake less dense“loosen the soil” (v)loosen, relax, loosebecome loose or looser or less tight“The noose loosened”,
“the rope relaxed”