Synonyms of slack in English:

slack


See definition of slack

adjective

1‘she heard a splash and the rope went slack’

SYNONYMS
loose, limp, not taut, not tight, hanging, flapping
relaxed, flexible, pliant
ANTONYMS

tight, taut, stretched

2‘try these tips to tone and tighten slack, unattractive skin’

SYNONYMS
flaccid, flabby, loose, sagging, saggy, drooping, droopy, soft
ANTONYMS

taut, toned, firm

3‘she was wearing a slack blue dress’

SYNONYMS
baggy, loose-fitting, loose, not tight, generously cut, roomy
shapeless, sacklike, oversized, ill-fitting, bagging, hanging, flapping, saggy
ANTONYMS

tight, tailored

4‘business had never been so slack’

SYNONYMS
sluggish, slow, quiet, slow-moving, not busy, inactive, flat, depressed, stagnant
ANTONYMS

busy, thriving

5‘some slack defensive play by Villa’

SYNONYMS
lax, negligent, neglectful, remiss, careless, slapdash, slipshod, lackadaisical, lazy, inefficient, incompetent, inattentive, offhand, casual, disorderly, disorganized
North American derelict
informal sloppy, slap-happy, do-nothing, asleep at the wheel
vulgar slang half-arsed
formal delinquent
rare otiose, pococurante
ANTONYMS

meticulous, diligent


noun

1‘the rope had just enough slack in it to allow her to reach him’

SYNONYMS
looseness, play, give

2‘as domestic demand starts to flag, foreign demand will help pick up the slack’

SYNONYMS
surplus, excess, residue, spare capacity

3‘he slept deeply, refreshed by a little slack in the daily routine’

SYNONYMS
lull, pause, respite, spell of inactivity, interval, break, hiatus, breathing space
informal let-up, breather

verb

1‘the horse slacked his pace’

SYNONYMS
reduce, lessen, slacken, slow, ease off, ease up
ANTONYMS

increase

2‘okay, carry on with this painting and no slacking’

SYNONYMS
idle, shirk, be inactive, be lazy, be indolent, sit back and do nothing, waste time, lounge about
British informal skive, bunk off
North American informal goof off
ANTONYMS

work hard


Phrases

    slack up

    ‘the horse didn't slack up until he reached the trees’


    SYNONYMS

    slow down, slow, decelerate, reduce speed, drop speed, put the brakes on

    ANTONYMS

    speed up, accelerate

    slack off

    1‘the rain had slacked off to a soft drizzle’


    SYNONYMS

    decrease, lessen, subside, get less, let up, ease off, abate, moderate, diminish, dwindle, die down, fall off, drop off, taper off, ebb, recede, wane

    ANTONYMS

    intensify

    2‘I told him to slack off a bit’


    SYNONYMS

    relax, take things easy, let up, ease off, ease up, do less, loosen up, slow down, be less active

    North American informal

    hang loose, stay loose, chill out

    ANTONYMS

    work harder