1. 
   Inadvertency
   • (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.
   Found op http://thinkexist.com/dictionary/meaning/inadvertency/
   
   
2. 
   inadvertency
   1) Attentiveness 2) Heedlessness 3) Inadvertence 4) Unmindfulness
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/inadvertency/1
   
   

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