chary
adjective uk/ˈtʃeə.ri/ us/ˈtʃer.i/
小心的，谨慎的；不愿采取行动的
uncertain and frightened to take risks, or unwilling to take action
I'm a bit chary of using a travel agency that doesn't have official registration. 选择没有正式注册的旅行社我有点不放心。
Synonyms: cagey circumspect wary