Thought"less, adv. 1.
Lacking thought; careless; inconsiderate; rash; as, a
thoughtless person, or act.
2. Giddy; gay; dissipated. [R.]
Johnson.
3. Deficient in reasoning power; stupid;
dull.
Thoughtless as monarch oaks that shade the
plain.
Dryden.
-- Thought"less*ly, adv. --
Thought"less*ness, n.