impracticable, impractical, inoperable, nonpractical, unserviceable, unworkable, useless

unsuitableinaccessible, unattainable, unavailable, unobtainable, unreachabledead, dormant, fallow, free, idle, inactive, inert, inoperative, latentarrested, interrupted, suspendedunrealistic

applicable, feasible, functional, operable, operational, practicable, practical, serviceable, ultrapractical, usable(also useable), useful, utilizable, workable

accessible, acquirable, available, obtainable, procurable, reachableall-around(also all-round), handyactive, alive, busy, employed, functioning, operating, operative, running, working