1) Attentiveness 2) Heedlessness 3) Inadvertence 4) Unmindfulness 1) Inattention 2) Slip 3) Unmindfulness 
• (n.) The quality of being inadvertent; lack of heedfulness or attentiveness; inattention; negligence; as, many mistakes proceed from inadvertence. • (n.) An effect of inattention; a result of carelessness; an oversight, mistake, or fault from negligence.
inadvertence.