Question

wary 【wary】adj.机警小心的He lied to me about my friend, and I have been very wary of him ever since.他对我撒了个关于我朋友的谎，从那时起，我便非常提防他了。

Accepted Answer

['weri] 
warymarked by keen caution and watchful prudence
Describe yourself as wary if you don't quite trust someone or something and want to proceed with caution. Be wary of risky things like wild mushrooms and Internet deals!
You can trace wary through Old English back to Old High German giwar "aware, attentive." If you keep a wary eye on something, you are attentive for signs that it is becoming dangerous. Likewise, if you give someone a wary glance, your face conveys the suspicion and caution you feel. When you are wary of driving alone at night or making promises, you fear something bad might happen if you do these things.
All forms of 'wary' will appear on average once every 602 pages.unwarilyunwarinessunwarywarilywarinesswary

Front	wary
Pron	['weri]
Back	【wary】 adj.机警小心的 He lied to me about my friend, and I have been very wary of him ever since. 他对我撒了个关于我朋友的谎，从那时起，我便非常提防他了。
Vocab	warymarked by keen caution and watchful prudence Describe yourself as wary if you don't quite trust someone or something and want to proceed with caution. Be wary of risky things like wild mushrooms and Internet deals! You can trace wary through Old English back to Old High German giwar "aware, attentive." If you keep a wary eye on something, you are attentive for signs that it is becoming dangerous. Likewise, if you give someone a wary glance, your face conveys the suspicion and caution you feel. When you are wary of driving alone at night or making promises, you fear something bad might happen if you do these things. All forms of 'wary' will appear on average once every 602 pages. unwarily unwariness unwary warily wariness wary

Wary Caution Weri Adj.机警小心的 Lied Friend I 他对我撒了个关于我朋友的谎，从那时起，我便非常提防他了