Definition of unregardant in US English:

unregardant

adjective

rare, poetic
  • Unobservant, inattentive; dismissive.

Origin

Mid 17th century; earliest use found in Walter Charleton (1620–1707), physician and natural philosopher. From un- + regardant, probably after unregard.

Pronunciation

unregardant

/(ˌ)ʌnrɪˈɡɑːd(ə)nt/