off his guard

• adj. 不警戒(不警惕；不提防)

英英释义

Adjective:

1. not prepared or vigilant;

   "the blow caught him napping"
   "caught in an off-guard moment"
   "found him off his guard"
   

近反义词

【近义词】

• off your guard 不警戒(不警惕...
• off her guard 不警戒(不警惕...
• napping 不警戒的
• off guard 不警戒， 不警惕,，不提...
• off one's guard 没有提防
• off-guard 毫无准备的