feasible, impractical, infeasible, uneconomical, prohibitive, unworkable, unviable, impossible, undoable, uneconomic, untenable, unpractical, doable, unwise, problematic, unrealistic, inviable, unachievable, unaffordable, unusable, implausible, preferable, inadvisable, illogical, unavoidable, unsuitable, unattainable, viable, difficult, counterproductive, plausible, unmanageable, unattractive, workable, unsustainable, ludicrous, futile, inaccessible, moot, inconceivable, inconvenient, foolhardy, unappealing, useless, obsolete, absurd, incompatible, inapplicable, impracticable, advantageous, farfetched, unmarketable, unobtainable, worthwhile, unadvisable, unpalatable, costly, unsupportable, unsuited, irrelevant, disadvantageous, pointless, unreasonable, laughable, inadequate, preposterous, inexpedient, unacceptable, intolerable, unfounded, ridiculous, expensive, acceptable, onerous, cumbersome, unenforceable, nonviable, desirable, unreachable, problematical, undesirable, unrealizable, necessary, nonstarter, unthinkable, unsafe, unsuccessful, unnecessary, ineffective, insufficient, impassable, fundable, unwieldy, imprudent, palatable, daunting, inefficient, tenable, insurmountable, suitable, fruitless, unsalvageable, realizable, challenging, achievable, ambitious, practicable, while, preselected, longerterm

impossible, impracticable, infeasible, unworkable