___
___ 失 [fail]
is in  ___
Original meaning: failure of some kind → miss | lose | make a mistake
On-reading: シツ as in 紛失 funshitsu ___
SHITSU ushina(u) 
失業 する shitsugyō suru be out of work
失礼 shitsurei being rude 礼 [courtesy] 
失礼ですが ... shitsurei desu ga ... I beg your pardon  
紛失 funshitsu loss  
失敗 shippai failure | mistake  
失敗 する shippai suru to fail