Search Result：by word of mouth
by word of mouth 
(TTS Sound)
(TTS Sound)Overview of adv by_word_of_mouth
The adv by word of mouth has 2 senses
- by word of mouth, viva voce -- (orally; "I heard it viva voce")
- orally, by word of mouth -- (by spoken rather than written means; "these stories were transmitted by word of mouth")