Translation guide
The English word "grapevine" can refer to the plant itself or to an informal network for spreading rumors or information. This guide focuses on the latter, more common figurative meaning for learners.
Referring to the spread of information through informal, unofficial channels, especially rumors or gossip.
Literally 'mouth communication', this is the most common and natural way to refer to word-of-mouth information, including online reviews and recommendations. It's neutral and widely used.
That restaurant became popular through word of mouth.
Means 'rumor' or 'gossip'. It emphasizes the content being spread rather than the channel. Often used when the information is unverified or sensational.
There are all sorts of rumors going around about her resignation.
A phrase meaning 'to hear from someone' or 'through the grapevine'. It emphasizes the indirect, person-to-person transmission.
I heard that news through the grapevine.
A poetic expression meaning 'a rumor carried by the wind'. It implies hearing something indirectly, often from an unspecified source. More literary or old-fashioned.
I heard of his success through the grapevine.
Referring to the vine on which grapes grow.
口コミ is neutral and often positive (e.g., reviews, recommendations), while 噂話 implies gossip or unverified rumors, which can be negative. Use 口コミ for general word-of-mouth and 噂話 when emphasizing the rumor aspect.
Avoid directly translating 'grapevine' as ぶどうのつる when referring to information networks. It will not be understood figuratively in Japanese.