backfire
verb /ˌbækˈfaɪə(r)/
  /ˌbækˈfaɪər/
 Verb Forms
| present simple I / you / we / they backfire |    /ˌbækˈfaɪə(r)/   /ˌbækˈfaɪər/  | 
| he / she / it backfires |    /ˌbækˈfaɪəz/   /ˌbækˈfaɪərz/  | 
| past simple backfired |    /ˌbækˈfaɪəd/   /ˌbækˈfaɪərd/  | 
| past participle backfired |    /ˌbækˈfaɪəd/   /ˌbækˈfaɪərd/  | 
| -ing form backfiring |    /ˌbækˈfaɪərɪŋ/   /ˌbækˈfaɪərɪŋ/  | 
- [intransitive] to have the opposite effect to the one intended, with bad or dangerous results
- Unfortunately the plan backfired.
 - He had to be rescued from the water when the stunt backfired disastrously.
 - backfire on somebody The surprise I had planned backfired on me.
 
Oxford Collocations Dictionaryadverb- badly
 - spectacularly
 - totally
 - …
 
- on
 
 - [intransitive] (of an engine or a vehicle) to make a sudden noise like an explosionTopics Transport by car or lorryc2 compare misfire