mum
UK: mʌm | US: mʌm
Definition
n. (British informal) mother
adj. silent; not speaking
Structure
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Etymology
The word "mum" as a term for "mother" originated in the late 19th century as a childish or affectionate shortening of "mummy." Its use as an adjective meaning "silent" derives from the Middle English "mum," an imitative sound representing closed lips (like "mmm"), later associated with secrecy or silence (e.g., "mum's the word").
Examples
She phoned her mum to ask for advice.
The kids shouted, "Mum, look at this!"
He kept mum about the surprise party.
"Mum's the word," she whispered.
The suspect stayed mum during the interrogation.