Etymologically

Etymology and origin of the Old English word slæc

Confidence
Established
Formation
Inherited
First attested
890–897 Pastoral Care More words from the 9th century
Inherited from
Proto-West Germanic *slak
Ultimate origin
Proto-Germanic *slakaz
Etymology tree
inherited borrowed derived
Old English slæc
English slack
From the same root
English slacken ← slæc

Pronunciation

Forms

slæc[1] Also sleac and slec.[2]

Etymology

It is inherited from Proto-West Germanic *slak, from Proto-Germanic *slakaz (“slack”).[1][3] Its cognates are Old Norse slakr, Old Saxon slak (“slack, cowardly”) and Old High German slah.[3][4] Heidermanns finds the adjective only in North and West Germanic.[5]

Kroonen calls it an o-grade adjective to a root Proto-Indo-European *sleg- that is only marginally attested, and compares Ancient Greek λαγαρός (lagarós, “slack, thin”) and, with doubt, Old Irish lacc (“slack”).[3] Holthausen adds Latin laxus (“loose”) and langueō (“to be faint”).[6] Köbler refers it to the same root, which he sets up with a long vowel and the meaning “slack, faint”.[7] Orel sets it up as *slakwaz and derives it from a verb meaning to slacken.[8]

Earliest recorded meaning

The adjective is first recorded in the Pastoral Care (Hatton 20, 890×897), where the ruler should be “ne to stræc on ðære lare, ne to slæc on ðære mildheortnesse” (“neither too strict in his teaching nor too slack in his mercy”).[9][10] It renders Latin “remissa” there, of mercy that is lax.[2]

Semantic evolution

Bosworth and Toller divide the senses between persons and things.[2] Of persons it means idle and lazy, glossing Latin “piger”, “reses” and “lentus”, then careless or remiss in duty, and in glosses also weak or ill, rendering “aeger”.[2][7] Ælfric's homilies have the wicked and slothful servant of the parable, yfela þeowa and sleac.[2] Of things it is used of slow, gentle movement, of a sleep that makes one sluggish, of service done without effort, and of a lax way of life.[2]

Middle English slak meant indolent.[11] From about 1300 it was also used of things that are loose and not taut,[11] and it survives as English slack.[11]

Timeline

  • 890×897 – ne to slæc on ðære mildheortnesse “nor too slack in mercy” in the Pastoral Care.[9][10]
  • c. 1300 – Middle English slak first used of things that are loose.[11]

Meanings

Adjective

  1. lazy, slothful, inactive.[2][7]
  2. careless, remiss, lax in duty or conduct.[2]
  3. weak, languid, ill.[2][7]
  4. of movement, slow, gentle.[2]

Word family

  • slæcnes
  • unslæc
  • slacian
  • slæccan

Descendants

  • Middle English slak (→ English slack; Scots slak)[1]

Usage notes

Bosworth and Toller count the sleac of Beowulf (line 2187) as this word, but Klaeber treats slēac “slow, slothful” as a different word, not related to slæc.[2][12]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Bosworth, Joseph; Toller, T. Northcote (1898), An Anglo-Saxon Dictionary, Oxford: Clarendon Press; Toller, T. Northcote (1921), Supplement, p. 880
  3. ^ a b c Kroonen, Guus (2013), Etymological Dictionary of Proto-Germanic, Leiden Indo-European Etymological Dictionary Series 11, Leiden / Boston: Brill, p. 452
  4. ^ Köbler, Gerhard (2014), Germanisches Wörterbuch, 5th ed., online, koeblergerhard.de/wikiling
  5. ^ Heidermanns, Frank (1993), Etymologisches Wörterbuch der germanischen Primäradjektive, Berlin / New York: De Gruyter, p. 514
  6. ^ Holthausen, Ferdinand (1934), Altenglisches etymologisches Wörterbuch, Heidelberg: Carl Winter, p. 296
  7. ^ a b c d Köbler, Gerhard (2014), Altenglisches Wörterbuch, 4th ed., online, koeblergerhard.de/wikiling, p. s.v. slæc
  8. ^ Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill, p. 349
  9. ^ a b Gneuss, Helmut; Lapidge, Michael (2014), Anglo-Saxon Manuscripts: A Bibliographical Handlist of Manuscripts and Manuscript Fragments Written or Owned in England up to 1100, Toronto: University of Toronto Press, p. 499
  10. ^ a b Healey, Antonette diPaolo; Price Wilkin, John; Xiang, Xin, eds. (2009), Dictionary of Old English Web Corpus, Toronto: Dictionary of Old English Project
  11. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  12. ^ Fulk, R. D.; Bjork, Robert E.; Niles, John D., eds. (2008), Klaeber's Beowulf and The Fight at Finnsburg, 4th ed., Toronto: University of Toronto Press (glossary), p. s.v. slēac

Related etymologies

  • stan · also from Proto-West Germanic
  • sittan · also from Proto-West Germanic
  • healdan · also from Proto-West Germanic
  • hrycg · also from Proto-West Germanic
  • an · also from Proto-West Germanic
  • open · also from Proto-West Germanic
  • eald · also from Proto-West Germanic
  • on · also from Proto-West Germanic
Cite this entry

“Slæc.” Etymologically, 16 Nov. 2026, etymologically.com/ang/sl%C3%A6c. Accessed 16 Nov. 2026.

Last edited on . ·