plum in one's mouth
The idiom "plum in one's mouth" is often used in British English to describe someone who speaks in a posh or upper-class manner.
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Definition
C1Sociolinguistics
(informal, UK)Speaking in a way that sounds very posh or upper-class.
Example
- He speaks with such a plum in his mouth that you can tell he went to an elite school.
C1Sociolinguistics
(informal, UK)Using a refined accent that indicates high social status.
Example
- Her accent was so pronounced, it was like she had a plum in her mouth.
Similar
Terms that have similar or relatively close meanings to "plum in one's mouth":
black plumbad taste in one's mouthplum wineplum blossommountain plumwild plumwild-goose plumcherry plumwatch one's mouthstick one's foot in itmouth off