Meaning of the word "a plum in your mouth" in English

What does "a plum in your mouth" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a plum in your mouth

US /ə plʌm ɪn jʊər maʊθ/
UK /ə plʌm ɪn jɔː maʊθ/
"a plum in your mouth" picture

Idiom

an affected way of speaking, as if one has a plum in one's mouth, often associated with upper-class accents

Example:
He speaks with a plum in his mouth, making him sound very aristocratic.
Her affected accent sounded like she had a plum in her mouth.