slack
adjectiveDefinition of slack
(Entry 1 of 5)
1
: not using due diligence, care, or dispatch : negligent
2a
: characterized by slowness, sluggishness, or lack of energy
a slack pace
b
: moderate in some quality
especially
: moderately warm
a slack oven
c
: blowing or flowing at low speed
the tide was slack
3a
: not tight or taut
a slack rope
b
: lacking in usual or normal firmness and steadiness : weak
slack muscles slack supervision
4
: wanting in activity : dull
a slack market
5
: lacking in completeness, finish, or perfection
a very slack piece of work