lackadaisical
Etymology and origin of the English word lackadaisical
Pronunciation
- IPA: /ˌlækəˈdeɪzɪkəl/, /læksə-/[1]
Etymology
Formed from lackadaisy,[2][3][4] a playful alteration of the exclamation lackaday,[2][3][5] which comes from alack the day.[3]
Earliest recorded meaning
It first meant affectedly languishing or full of vapid sentiment, like someone given to crying “Lackaday!”;[6][3] Sterne used it in 1768.[3]
Semantic evolution
Its sense moved from sentimental languor to lack of energy or interest.[2][4] Etymonline suggests the change was probably influenced by lax.[3]
Timeline
Modern meaning
Adjective
- Lacking spirit, energy or interest; listless.
- Lazy, idle.
Word family
- lackadaisically
- lackadaisicalness
Related words
- lackaday
- lax
- alack
References
- [1] Wiktionary, the free dictionary, https://en.wiktionary.org
- [1] [2] [3] The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
- [1] [2] [3] [4] [5] [6] [7] [8] [9] Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
- [1] [2] Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
- [1] [2] Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
- [1] [2] Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
Cite this entry
“Lackadaisical.” Etymologically, 6 Oct. 2026, etymologically.com/en/lackadaisical. Accessed 7 Oct. 2026.
Last edited on .