UNOBSERVANT
a. 1. Not observant; not attentive; heedless. 2. Not obsequious.
unobservant
un ob serv ant |ˌənəbˈzərvənt ˌənəbˈzərvənt | ▶adjective not observant. DERIVATIVES un ob serv ant ly adverb
un |ob ¦ser ¦vant |ʌnəbˈzəːv (ə )nt | ▶adjective not observant. DERIVATIVES unobservantly adverb