Part of Speech
adjective
Definition
without interest, vigor, or determination; listless; lethargic
Origin + Etymology
from lackaday or its obsolete extended form lackadaisy
Synonyms
- slothful
- unambitious
- idle
- careless
- lazy
- lax
- unenthusiastic
- halfhearted
- uninterested
Antonyms
- active
- interested
- careful
- energetic
- lively
Example
His lack of preparation for that presentation really exposed his lackadaisical work ethic.
Usage Over Time
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