The story
From mum (“silence”). Recorded since 1704.
Etymology from Wiktionary, CC BY-SA 4.0.
mum's the word
Today it means: Indicates that something is a secret and not to be divulged. Full definition →
Today it means: Indicates that something is a secret and not to be divulged. Full definition →
From mum (“silence”). Recorded since 1704.
Etymology from Wiktionary, CC BY-SA 4.0.