- Unaware, without noticing; inattentive; careless.
- Antonym: heedful
- Sing we joyous, all together, heedless of the wind and weather.
- 1910, Emerson Hough, chapter I, in The Purchase Price: Or The Cause of Compromise, Indianapolis, Ind.: The Bobbs-Merrill Company, OCLC 639762314, page 0124:
- "A fine man, that Dunwody, yonder," commented the young captain, as they parted, and as he turned to his prisoner. "We'll see him on in Washington some day. […] A strong man—a strong one; and a heedless." ¶ "Of what party is he?" she inquired, as though casually.
unaware, without noticing