Wary(adjective)
Keeping careful watch for possible danger or difficulties.
Hindi meaning:चौकन्ना
Synonyms: Watchful, Hawk-Eyed, Vigilant, Chary, Wakeful
Antonyms: Heedless, Inattentive, Negligent, Slack, Inadvertent
Example: The thief was spotted by wary neighbours.
Trick to remember: Wary means to watch carefully. 
