Mum's the word Mum's the word Mum's the word is a popular English idiom. It is related to an expression used by William Shakespeare, in "Henry VI, Part 2". The word “mum” is a slanged version of momme, which was used between 1350-1400 in Middle English with very close to the same meaning: Be silent; Do not reveal "Mum's the word" means to keep silent or quiet. "Mum" is a Middle English word meaning 'silent', and may be derived from the "mummer" who acts without speaking. Note the similar English word "mime" (Old English "mīma", Latin "mimus") meaning silent actor or imitator. The
Old English is used by the poet where a word like "lo" or "behold" would be expected. This usage is similar to "what-ho!", both an expression of surprise and a call to attention. English poetry is based on stress and alliteration. In alliteration, the first consonant in a word alliterates with the same consonant at the beginning of another word, as with and . Vowels alliterate with any other vowel, as with and . In the text below, the letters that alliterate are bolded. A semi-fluent translation in Modern English would be: Lo! We have heard of majesty of the Spear-Danes, of