Word: 警惕 (jǐngtì) 警惕 dictionary entry jǐngtì to be on the alert; vigilant; alert; on guard; to warn Full dictionary entry for 警惕 Example sentences using 警惕 2 sentences, showing page 1 of 1. 不要放松警惕。 Búyào fàngsōng jǐngtì. Don't let your guard down. 你真是警惕。 Nǐ zhēnshi jǐngtì. You're very alert.