loose

1 loose /ˈluːs/ adjective
looser; loosest
1 loose
/ˈluːs/
adjective
looser; loosest
Britannica Dictionary definition of LOOSE
1 
: not tightly fastened, attached, or held
2 
a  : not pulled or stretched tight
b  of clothing : not fitting close to your body : not tight
3 
: not physically held or contained
— see also let loose 1 (below)
4 
a  : not held together in a solid or tight mass
b  : not held together in a bundle, container, etc.
5 
: not stiff or tense : flexible or relaxed
— see also hang loose (below)
6 
: not closely joined or united
7 
a  : not exact or precise
b  : not careful in speech : talking too freely
8 
sports : not controlled or held by any of the players in a game
9 
old-fashioned : not respectable sexually : not decent or moral
10 
of solid waste from the body : containing a larger than normal amount of fluid
also : producing loose stools

all hell breaks loose

— see hell

break loose

— see 1break

cut loose

1 
cut (someone) loose : to stop supporting or employing (someone)
: to end an official relationship or agreement with (someone)
2 
chiefly US, informal : to act in a free and relaxed way after behaving in a way that is controlled

hang loose

chiefly US, informal
: to remain calm and relaxed

have a screw loose, have a loose screw

— see 1screw

let loose

1 
let/set/turn (someone or something) loose : to allow (someone or something) to move or go freely
— often used figuratively
2 
: to produce (something, such as a cry) in a sudden and forceful way

play fast and loose

— see 1play

— loosely

adverb

— looseness

noun [noncount]
2 loose /ˈluːs/ adverb
2 loose
/ˈluːs/
adverb
Britannica Dictionary definition of LOOSE
: in a way that does not fit close to your body
3 loose /ˈluːs/ verb
looses; loosed; loosing
3 loose
/ˈluːs/
verb
looses; loosed; loosing
Britannica Dictionary definition of LOOSE
[+ object]
1 
: to release or untie (an animal or person)
— often used figuratively
2 
: to make (something) less tight : loosen
3 
: to shoot or fire (something, such as an arrow or a bullet)
4 loose /ˈluːs/ noun
4 loose
/ˈluːs/
noun
Britannica Dictionary definition of LOOSE

on the loose

: able to move freely : not controlled or held in a prison, cage, etc. — used especially to describe a dangerous person, animal, or group