(p. 9) acala motionless, immobile; stationary, static (অচল তড়িত্); unwavering; firm, steady; gone out of practice, not current, obsolete (অচল প্রথা); counterfeit or forged (অচল টাকা বা নোট); that which cannot be kept going, unmaintainable (অচল সংসার); invalid; untenable (অচল যুক্তি); unserviceable (অচল ঘড়ি); impracticable (অচল প্রস্তাব); (of persons) cast off (সমাজে অচল). n. a mountain, a hill. অচল অবস্হা, অচলাবস্হা lack of progress; a deadlock, an impasse, a stalemate, standstill. ̃ন n. state of being out of practice or currency, obsoleteness. ̃নীয় a. incapable of being introduced or circulated. 44)

(p. 56) abāstaba, abāstabika unreal, immaterial; untrue, false; fanciful (অবাস্তব কল্পনা); unpractical, impracticable (অবাস্তব পরিকল্পনা); non-existent; inexistent; illusory. ̃তা n. unreality, immateriality; untrueness, falseness; fancifulness; impracticability; non-existence; inexistence; illusoriness. 68)

(p. 80) aśakya that which cannot be accomplished; impracticable; lying beyond the reach of one's power. 16)

(p. 89) asādhya incapable of being done or accomplished or attained or realized; unperformable, impracticable, unattainable, unrealizable, unachievable through meditation, asceticism etc. (অসাধ্য সাধনা); irremediable, incurable (অসাধ্য রোগ). ̃সাধন n. making the impossible possible; realization of the unrealizable, attainment of the unattainable; (loos.) accomplishment of a seemingly impossible task (esp. through extraordinary efforts). শিবের অসাধ্য even gods cannot do, even beyond the power of gods. 11)