Meaning of the word "go pear-shaped" in English

What does "go pear-shaped" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

go pear-shaped

US /ɡoʊ pɛər-ʃeɪpt/
UK /ɡoʊ pɛər-ʃeɪpt/
"go pear-shaped" picture

Idiom

1.

if a plan or situation goes pear-shaped, it goes wrong

Example:
Our plans for the picnic went pear-shaped when it started to rain heavily.
The whole project went pear-shaped because of poor management.
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