radio silence

• (General American) IPA^(key): /ˈɹeɪ.di.oʊ ˌsaɪ.ləns/
• (UK) IPA^(key): /ˈɹeɪ.di.əʊ ˌsaɪ.ləns/

radio silence (countable and uncountable, plural radio silences)

1. (radio) A status maintained where all fixed or mobile radio stations in an area stop transmitting (sometimes limited to certain frequency bands).
2. (radio) The period of time during which this status exists.
3. (figurative) A period of time during which nothing is heard from a person or organization, especially when such communication would normally be expected.

   After the abuse scandal, the company went into complete radio silence.

   • 2016 March 29, Jocelyn Samara D., Rain (webcomic), Comic 815 - Where is she?:

     "No messages, actually. Total radio silence on her end all day."

   • 2022 December 23, Katherine Rosman, “She Worked for Twitter. Then She Tweeted at Elon Musk.”, in The New York Times‎^[1], →ISSN:

     That was more than Ms. Solomon and many of her colleagues had heard internally. “Radio silence,” she said. She began to vent her frustration on Twitter.