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
Jew (word) following the Greek version, is "Iudaeus", and from these sources the term passed to other European languages. The Old French "giu", earlier "juieu", had elided (dropped) the letter "d" from the Latin "Iudaeus". The Middle English word "Jew" derives from Old English where the word is attested as early as 1000 in various forms, such as "Iudeas", "Gyu", "Giu", "Iuu", "Iuw", "Iew". The Old English name is derived from Old French. The modern French term is "juif". Most European languages have retained the letter "d" in the word for Jew. Etymological equivalents are in use in other languages, e.g., "Jude"