Language: en
Meaning: (idiomatic)Indicates that something is a secret and not to be divulged.She doesn't know anything about it yet, somum's the word, OK?1879,Anna Katharine Green,The Leavenworth Case: A Lawyer's Story, G. P. Putnam's Sons, page256:… and thatmumis the word till I give you liberty to speak2024November 18, Jeremy Levick & Rajat Suresh, “March Madness” (18:44 from the start), inWhat We Do in the Shadows[1], season 6, episode 7, spoken by Charmaine Rinaldi (Marissa Jaret Winokur):“Well, does she know how you feel?” “Honestly, Charmaine, I do not even know how I feel.” “Aw. Well, you should tell her.” “I should tell no one! Can you keep this secret, Charmaine?” “Mm-hmm.” “Good. Because if you don't, I'll kill you in your sleep.” “Okay,mum's the word.”
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