C1 adjective rɪˈlɛntləs
relentless
নিরলস
Meaning
Oppressively constant; incessant; showing no abatement of severity, intensity, strength, or pace.
Example
The freedom fighters' relentless struggle led to victory.
মুক্তিযোদ্ধাদের নিরলস সংগ্রাম বিজয় এনেছিল।