a. Without heed or care; inattentive; careless; thoughtless; unobservant. [ 1913 Webster ]
O, negligent and heedless discipline! Shak. [ 1913 Webster ]
The heedless lover does not know Whose eyes they are that wound him so. Waller.
-- Heed"less*ly, adv. -- Heed"less*ness, n. [ 1913 Webster ]