lackadaisical

adjective

lack·​a·​dai·​si·​cal ˌla-kə-ˈdā-zi-kəl How to pronounce lackadaisical (audio)
Synonyms of lackadaisical
: lacking life, spirit, or zest : languid
teachers who are impatient with lackadaisical students
lackadaisically adverb

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Where does lackadaisical come from?

We’re too enthusiastic about the lexicon to be lackadaisical about words, but lackadaisical itself is rooted in the sort of sorrow that can put a damper on one’s passion for vocabulary expansion. When folks living from the late 17th to the late 19th century had one of those days when nothing goes right, they could cry "Lackaday!" to express their sorrow and disappointment as a shortened form of the expression "alack the day." (Alack is an interjection used to express sorrow or regret.) By the mid-1700s, the adjective lackadaisical had been formed to describe these miserable ones and their doings and sayings. Around the same time, the word lackadaisy was introduced to the language as an interjection similar to lackaday; it was never as prevalent as lackaday, but it may have influenced the development of lackadaisical.

Choose the Right Synonym for lackadaisical

languid, languorous, lackadaisical, listless, spiritless mean lacking energy or enthusiasm.

languid refers to an unwillingness or inability to exert oneself due to fatigue or physical weakness.

was depressed and languid for weeks after surgery

languorous suggests a dreamy boredom and delicacy that avoids unnecessary activity.

languorous cats lying in the sun

lackadaisical implies a carefree indifference marked by half-hearted efforts.

lackadaisical college seniors pretending to study

listless suggests a lack of interest caused by physical weakness or dissatisfied boredom.

listless hospital patients
listless children flipping through picture books on a rainy day

spiritless refers to a lack of animation or vigor that gives one's actions and words life.

a spiritless recital of the poem

Examples of lackadaisical in a Sentence

His teachers did not approve of his lackadaisical approach to homework. feeling particularly lackadaisical in the summer heat, they lazily tossed a ball back and forth
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In the interest of not having to rehash the now-familiar back and forth, Ibrahimović stated that Lalas’ criticism of the French squad’s lackadaisical first-half efforts was rooted in ignorance, this despite the fact that his beef should have been directed at match analyst Landon Donovan. Anthony Crupi, Sportico.com, 24 June 2026 Allowing Towns and others the opportunity to help create on offense may help Brunson avoid some lackadaisical passing and silly fouls. Tom Rende, Forbes.com, 10 June 2026 Center fielder Alex Call made a lackadaisical throw back to the infield, but second baseman Alex Freeland threw a strike home to nail Lee with feet to spare. Justice Delos Santos, Mercury News, 22 Apr. 2026 Because two years in, Kel’el Ware has been both a dynamic contributor and a lackadaisical bystander. Ira Winderman, Sun Sentinel, 14 Apr. 2026 See All Example Sentences for lackadaisical

Word History

Etymology

irregular from lackaday + -ical

First Known Use

1768, in the meaning defined above

Time Traveler
The first known use of lackadaisical was in 1768

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Cite this Entry

“Lackadaisical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lackadaisical. Accessed 6 Jul. 2026.

Kids Definition

lackadaisical

adjective
lack·​a·​dai·​si·​cal ˌlak-ə-ˈdā-zi-kəl How to pronounce lackadaisical (audio)
: lacking spirit or enthusiasm : languid, listless
lackadaisically adverb

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