HEE'DLESS, adjective Inattentive; careless; negligent of the means of safety; thoughtless; regardless; unobserving. We say, heedless children; heedless of danger or surprise. The heedless lover does not know, Whose eyes they are that wound him so.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI