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 as the Épinal-Erfurt, Leiden and Corpus Glossaries. Over time, these word-lists were consolidated and alphabeticised to create extensive Latin-Old English glossaries with some of the character of dictionaries, such as the Cleopatra Glossaries, the Harley Glossary and the Brussels Glossary. In some cases, the material in these glossaries continued to be circulated and updated in Middle English glossaries, such as the Durham Plant-Name Glossary and the Laud Herbal Glossary. Old English lexicography was revived in the early modern period, drawing heavily on Anglo-Saxons' own glossaries. The major publication at this time was William Somner's "Dictionarium Saxonico-Latino-Anglicum". The next substantial Old