slackness

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US/ˈslæknəs/

noun

The state of being slack; the quality of having slack.

Similar
inanitionlassitudelethargyslacklaxnesslaxityremissness
OriginMiddle English slacnesse →
UncommonScrabble 15
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Meanings

nounslackness (usually uncountable, plural slacknesses)

plural slacknesses

  1. uncountableusuallyThe state of being slack; the quality of having slack.
  2. uncountableusuallyVulgarity in West Indian culture.
  3. uncountableusuallyA subgenre of dancehall music with sexual lyrics.

Synonyms & antonyms

nounweakness characterized by a lack of vitality or energy

Similar
inanitionlassitudelethargy
Broader
weakness

nounthe quality of being loose (not taut)

Similar
slack
Broader
loosenessplay

nounthe quality of being lax and neglectful

Similar
laxnesslaxityremissness
Broader
negligenceneglectneglectfulness
Also see
inanitionlassitudelaxitylaxnesslethargyremissnessslack

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Middle Englishslacnesse
  2. Englishslackness

From Middle English slacnesse, slakenes, slaknesse; equivalent to slack + -ness. Compare Old English slæcnes.

More words from Middle English

Full word history & related roots →

Translations

Dutch slapte
  • slaptestate of being slack
German Schlaffheit
  • Schlaffheitstate of being slack
Hindi शिथिलता
  • शिथिलता (śithiltā)state of being slack
Irish leibideacht
  • leibideachtstate of being slack

Rhymes & wordplay

Rhymes with slackness

blackness
All rhymes →

Anagrams

snackless
Cite this entry
APA

slackness. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/slackness

MLA

“slackness.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/slackness. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “slackness,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/slackness.

Source: slackness on Wiktionary, CC BY-SA 4.0.