lackadaisical

[lak-uh-dey-zi-kuhl]

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adjective

without interest, vigor, or determination; listless; lethargic: a lackadaisical attempt.
lazy; indolent: a lackadaisical fellow.

Origin of lackadaisical

1760–70; lackadais(y) (variant of lackaday) + -ical

Related formslack·a·dai·si·cal·ly, adverblack·a·dai·si·cal·ness, noun

Synonyms for lackadaisical

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2. slothful, unambitious, idle.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for lackadaisicalness

sloth, lethargy, negligence, apathy, weariness, inertia, inertness, slackness, dormancy, stolidity, tardiness, heaviness, idleness, dullness, remissness, listlessness, slothfulness, inactivity, laxness, slowness

British Dictionary definitions for lackadaisicalness

lackadaisical

adjective

lacking vitality and purpose
lazy or idle, esp in a dreamy way

Derived Formslackadaisically, adverblackadaisicalness, noun

Word Origin for lackadaisical

C18: from earlier lackadaisy, extended form of lackaday

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for lackadaisicalness

lackadaisical

adj.

1768 (Sterne), from interjection lackadaisy "alas, alack" (1748), an alteration of lack-a-day (1690s), from alack the day (1590s). Hence, "given to crying 'lack-a-day,' vapidly sentimental." Sense probably altered by influence of lax. Related: Lackadaisically.