LEARNit Dictionary
mystery shopper
noun
/ˌmɪstri ˈʃɒpə(r)/
UK
/ˌmɪstəri ˈʃɑːpər/
US
1
a person whose job is to visit or phone a shop or other business, or use their website, pretending to be a customer, in order to get information on the quality of the service, the facilities, etc.
خریدار مخفی, مشتری مخفی, خریدار پنهان