Incapable of being persuaded or convinced.

मनाने में असमर्थ

English Usage: The jury found the defendant unsuasible, as the evidence was overwhelmingly against him.

Hindi Usage: न्यायालय ने अभियुक्त को मनाने में असमर्थ पाया, क्योंकि सबूत उसके खिलाफ थे।