Inobservant
Pronunciation : In`ob*serv"ant
Part of Speech : a.
Etymology : [L. inobservans. See In- not, and Observant.]
Definition : Defn: Not observant; regardless; heedless. Bp. Hurd. -- In`ob*serv"ant*ly, adv.
Source : Webster's Unabridged Dictionary, 1913