Un·think·ing, a.
1. Not thinking; not heedful; thoughtless; inconsiderate; as, unthinking youth.
2. Not indicating thought or reflection; thoughtless.
With earnest eyes, and round unthinking face,
He first the snuffbox opened, then the case. --Pope.
-- Un*think*ing*ly, adv. -- Un*think*ing*ness, n.
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