careless
UK /ˈkɛəlɪs/ · US /kɛɹ.ləs/ adjective
- adjective Not concerned or worried (about).
- adjective Not giving sufficient attention or thought, especially concerning the avoidance of harm or mistakes. “Jessica was so careless that she put her shorts on backwards.”
- adjective (archaic) Free from care; unworried, without anxiety. “Jessica was careless about putting her shorts on properly.”
Synonyms
negligent reckless laid-back unconcerned airy at ease at peace carefree casual chill cool devil-may-care easy-breezy easygoing happy-go-lucky indifferent insouciant leisurely lighthearted loose regardless
Antonyms
Etymology
From Middle English careles, from Old English carlēas (“careless, reckless, void of care, free from care, free”), equivalent to care + -less. Cognate with Icelandic kærulaus (“careless, negligent”).
Webster’s 1913
- adjective Free from care or anxiety. hence, cheerful; light-hearted.
- adjective Having no care; not taking ordinary or proper care; negligent; unconcerned; heedless; inattentive; unmindful; regardless.
Etymology [AS. cearleás.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “careless”, CC BY-SA 4.0. Details