A fit person walking briskly can walk a mile in 13 minutes. An estimated average walking speed for calculating... An average person can walk one mile on a flat, well-groomed surface in 17 to 20 minutes. A fit person walking briskly can walk a mile in 13 minutes. An estimated average walking speed for calculating...
Mum's the word is a popular English idiom. It is related to an expression used by William Shakespeare, in Henry VI, Part 2. Mum's the word means to keep silent or quiet. Mum is a Middle English word meaning silent. The word may be derived from the mummer who does pantomime and just acts without saying anything. Note the phonetically similar German word stumm (Old High German stum, Latin mutus) meaning silent, mute.
mumble verb [I or T]. B2 to âspeak âquietly and in a way that is not âclear so that the words are âdifficult to âunderstand: She mumbled something about being too âbusy. [+ speech] I'm âsorry, he mumbled. (Definition of mumble from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press).See all translations.he Cambridge English Dictionary is constantly being updated and expanded to reflect the interests of our users. One area of particular interest to our users is that of English Language Teaching (ELT), and a number of ELT terms have recently been added to the dictionary.