- not curious; not inquisitive or observant; inattentive; indifferent.
- Archaic. lacking care or attention; careless; negligent.
- Archaic. deficient in interest or novelty.
- not curious; indifferent or uninterested
1560s, “negligent, heedless,” from Latin incuriosus “careless, negligent, unconcerned,” from in- “not, opposite of, without” (see in- (1)) + curiosus (see curious). Meaning “uninquisitive” is from 1610s. Objective sense of “unworthy of attention” is from 1747.