ex directory

/ɛksdəˈrɛktəri/
adjective
  1. (of a telephone number) not listed in the public telephone directory, usually for privacy reasons.
    • If you want an ex-directory listing, you have to request it from the phone company.
    • Many celebrities choose to have an ex-directory number for their personal line.
    • She keeps her phone number ex-directory to avoid telemarketers.
Antonyms
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