verb تَضمین کَردَن / tazmin kardan

IPA: /tæzmi:n kærdæn/ compound verb ofتَضمین / tazminandکَردَن / kardan

بودنش تو مرد عوضی، گیشه رو تضمین می‌کرد.

budaneš tu mard-e avazi، giše ro tazmin mi‌kard.

His being in Mard-e Avazi would guarantee the box office,

Wiktionary

assure, avouch, certify, ensure, guarantee, indemnify, seal, undertake, underwrite, vouch, warrant, witness