Mum
Mum adjective - Deliberately refraining from speech.
Unexpressive and mum are semantically related In some cases you can use "Unexpressive" instead an adjective "Mum".
Unexpressive
Unexpressive adjective - Deliberately impassive in manner.
Mum and unexpressive are semantically related in taciturn topic. Sometimes you can use "Mum" instead an adjective "Unexpressive", if it concerns topics such as uncommunicative.
Mutual synonyms
Cite this Source
Unexpressive and Mum. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/mum/unexpressive
Mum & Unexpressive. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/mum/unexpressive>.
Unexpressive or Mum. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/mum/unexpressive.
Google Ngram Viewer shows how "mum" and "unexpressive" have occurred on timeline