furtive
/ˈfɜːr.tɪv/Definitions
1. adjective
secretly looking around with suspicion or fear; sneaking or stealing away; done or done with stealth.
“The thief’s furtive movements caught the attention of the store owner.”
2. noun
a secretive or suspicious movement or action.
“The furtive glance in the crowd made me feel uneasy.”