LEARNit Dictionary
mystery shopping
noun
/ˌmɪstri ˈʃɒpɪŋ/
UK
/ˌmɪstəri ˈʃɑːpɪŋ/
US
1
the activity of visiting or phoning a shop or other business, or using their website, pretending to be a customer, in order to get information on the quality of the service, the facilities, etc.
خریدار مخفی, ارزیابی مشتری مخفی, بازرسی مخفی