Word: 必定 (bìdìng) 必定 dictionary entry bìdìng to be bound to Full dictionary entry for 必定 Example sentences using 必定 2 sentences, showing page 1 of 1. 他的政权必定会崩溃。 Tā de zhèngquán bìdìng huì bēngkuì. His regime is bound to collapse. 你这么努力，必定会成功的。 Nǐ zhème nǔlì, bìdìng huì chénggōng de. You work so hard, so you're bound to succeed.