Meaning of the word backfired in English

What does backfired mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

backfired

US /ˈbækˌfaɪərd/
UK /ˈbækˌfaɪəd/

Verb

(of a plan or action) have an unintended and unwelcome result

Example:
His attempt to impress her backfired when he spilled coffee on her dress.
The new policy was intended to help the poor, but it backfired and made things worse.
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