Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

Thesaurus

slackness

noun

Synonyms and Antonyms of slackness

1 failure to take the care that a cautious person usually takes

  • considering the chemical companyʼs slackness when it comes to safety, itʼs a wonder there hasnʼt been a catastrophe
Synonyms of slackness

carelessness, dereliction, heedlessness, incaution, incautiousness, laxness, neglectfulness, negligence, remissness
Words Related to slackness

foolhardiness, rashness, recklessness, wildness

neglect, omission

delinquency, irresponsibility, irresponsibleness, malfeasance, malpractice, misconduct

misdirection, mishandling, mismanagement

forgetfulness, inadvertence, inadvertency, inattention, inattentiveness, obliviousness, shortsightedness, unwariness
Near Antonyms of slackness

alertness, attention, attentiveness, awareness

circumspection, observance, vigilance, watchfulness

responsibility, responsibleness
Antonyms of slackness

care, carefulness, caution, cautiousness, heedfulness

2 the extent to which something hangs or dips below a straight line

  • thereʼs simply too much slackness in this clothesline
Synonyms of slackness

droop, hang, sag, slack
Words Related to slackness

floppiness, laxity, laxness, limpness, looseness
Near Antonyms of slackness

rigidity, rigidness, tautness, tenseness, tension, tightness

Learn More about slackness

  1. Spanish Central: Translation of slackness Britannica English: Translation of slackness for Arabic speakers

Seen and Heard

What made you want to look up slackness? Please tell us where you read or heard it (including the quote, if possible).

show comments hide comments

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

tomfoolery

playful or foolish behavior

Get Word of the Day daily email!

TRENDING NOW

  1. gaslight It is a word, though.

  2. invasion CNN reporter questions President.

  3. relevancy Ariana Grande slams ex-fiancé.

SEE ALL

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

Ask the Editors

Word Games