Synonyms and related words :
beyond one, functionless, impracticable, impractical, in disrepair, inapplicable, infeasible, inoperable, inoperative, insuperable, insurmountable, nonfunctional, nonutilitarian, otiose, out of order, out of whack, too much for, unachievable, unattainable, uncompassable, unconducive, undoable, uneffectible, unemployable, unfeasible, unfit, unhelpful, unnegotiable, unperformable, unrealizable, unserviceable, unsuitable, unsurmountable, unusable, useless