Apte Sanskrit-English Dictionary
a. 1 Not to be accomplished or completed, not pro- per, easy, or capable of being ac- complished; nāsti asādhyaṃ nāma manobhuvaḥ K. 157.
2 Not capable of being proved.
3 Incurable, irremediable (as a disease or patient); asādhyaḥ kurute kopaṃ prāpte kāle gado yathā Śi. 2. 84; asādhya iti vaidyenātura iva V. 3; Mv. 4. 23; bhiṣajāmasādhyaṃ R. 8. 93.