C1 adjective /ʌnˈfɔːltərɪŋ/
unfaltering
অটল
Meaning
Steady and resolute; not weakening or hesitating
Example
She continued with unfaltering determination.
সে অটল দৃঢ়সংকল্প নিয়ে এগিয়ে চলেছিল।