Back-of-the-envelope
//ˌbæk‿əv ðiː ˈɛnvələʊp//
Pronunciation
US //ˌbæk‿əv ðiː ˈɛnvələʊp//
US //-ˈɒnvələʊp//
US //-ˈɒnvləʊp//
US //ˌbæk‿əv ði ˈɛnvəˌloʊp//
US //-ˈɑnvəˌloʊp//
US //-ɛnvəˌlop//
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.