WordReference Random House Learner's Dictionary of American English © 2025
ˈword of ˈmouth, n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- oral communication as opposed to written:The rumor spread rapidly by word of mouth.
word′ of mouth′,
word′-of-mouth′, adj.
- informal oral communication:The rumor spread rapidly by word of mouth.
- 1545–55
'word of mouth' also found in these entries (note: many are not synonyms or translations):
catechesis
- catechist
- old wives' tale
- parol
- publicity
- tradition
- viral marketing
- viva voce
- whispering campaign
- word