N-COUNT [oft with poss]口号;格言 Someone's watchword is a word or phrase that sums up their attitude or approach to a particular subject or to things in general. 口号;格言
Caution has been one of Mr Allan's watchwords.
“小心谨慎”是艾伦先生的座右铭。
You don't have to deny yourself everything that's nice when you're pregnant. Moderation is the watchword.