unadvertised

/ˌʌnədˈvɜːrtaɪzd/
adjective
  1. Not made known to the public through advertisements or announcements.
    • The store had an unadvertised sale on winter coats that only regular customers knew about.
    • The band played an unadvertised show at a small club downtown.
    • She got the job through an unadvertised position that was filled by word of mouth.
Synonyms
What does "unadvertised" mean? | whatsthatwordmean | whatsthatwordmean