inobservant (?.)

• careless
• disregardant
• disregardful
• distracted
• distrait
• heedless
• inadvertent
• inattentive
• inconstant
• incurious
• indifferent
• negligent
• nonadherent
• noncompliant
• nonconforming
• nonobservant
• regardless
• thoughtless
• uncompliant
• unconforming
• unfaithful
• unheedful
• unheeding
• unloyal
• unmarking
• unmindful
• unnoticing
• unnoting
• unobservant
• unobserving
• unperceiving
• unremarking
• untrue
• unwatchful