Heedless

Heed"less, a. Without heed or care; inattentive; careless; thoughtless; unobservant.

O, negligent and heedless discipline!
Shak.

The heedless lover does not know
Whose eyes they are that wound him so.
Waller.

-- Heed"less*ly, adv. -- Heed"less*ness, n.