yudan saseru
1. to put someone off his guard; to throw someone off his guard
Expression
1. to put someone off his guard; to throw someone off his guard
1. negligence; carelessness
1. It's not carelessness.; It's not a mistake.
1. If one lets their guard down; If one is careless
1. Was not careless.; Was not negligent.
1. If careless; If you let your guard down
1. Not careless.; Not letting my guard down.
1. It is not carelessness.; It is not a mistake.