(每日一词）wary

Wary  /ˈwer.i/ adj. 谨慎的；小心翼翼的

meaning: not completely trusting or certain about something or someone 谨慎的；小心翼翼的

词源：worry, aware 

e.g.  I’m a little wary about/of giving people my address when I don’t know them very well. 如果不是太熟的话，我不会轻易告诉别人我的地址。