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, sack-like, 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

British 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 British informal goof off

ANTONYMS

work hard


Phrases

    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

      slack

      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

      slack
    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