dogged persistence

Translations
упорное упорство
His dogged persistence finally paid off.
Его упорное упорство наконец-то окупилось.
Definitions
Dogged persistence refers to a determined and tenacious attitude in pursuing a goal or task, characterized by unwavering commitment and resilience despite challenges or obstacles.
Words
dogged

adjective
упорный
persistence

noun
настойчивость