Mum’s the word

Mum’s the word is an idiom that dates back to the turn of the eighteenth century. We will look at the meaning of the idiom mum’s the word, where it comes from and some examples of its use in sentences.Mum’s the word is an admonition to keep something quiet, to keep something secret, to remain […]
from Grammarist
http://grammarist.com/idiom/mums-the-word/