loosen
verb.
make loose or looser
loosen the tension on a rope
Synonym: loose
verb.
make less severe or strict
The government relaxed the curfew after most of the rebels were caught
Synonym: relax
verb.
become less severe or strict
The rules relaxed after the new director arrived
Synonym: relax
verb.
disentangle and raise the fibers of
tease wool
Synonym: tease, tease apart
verb.
cause to become loose
undo the shoelace|untie the knot|loosen the necktie
Synonym: undo, untie
verb.
make less dense
loosen the soil
verb.
become loose or looser or less tight
The noose loosened|the rope relaxed
Synonym: loose, relax
Antonym: stiffen