The phonetic transcription of "backside" is /ˈbæk.saɪd/ in British English and /ˈbæk.saɪd/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "backside": rear, behind, bottom.
Example usage of "backside": "He fell on his backside after slipping on the ice.". More examples on the page.