practical

unfeasible, unworkable, impracticable, unpractical, feasible, uneconomical, infeasible, prohibitive, unwise, impossible, counterproductive, unsuitable, unviable, inconvenient, cumbersome, inadvisable, illogical, uneconomic, irrelevant, problematic, useless, pointless, unrealistic, foolhardy, ludicrous, unnecessary, inefficient, superfluous, expensive, futile, untenable, costly, absurd, preferable, unachievable, obsolete, unreasonable, doable, unaffordable, inadequate, unreliable, undoable, ridiculous, inviable, difficult, unsupportable, incompatible, unsuited, preposterous, ineffective, burdensome, unattractive, outdated, laughable, onerous, inappropriate, unwieldy, nonsensical, unusable, unmanageable, unenforceable, outmoded, problematical, unavoidable, implausible, redundant, nonstarter, anachronistic, unadvisable, unscientific, inaccessible, undesirable, unsustainable, workable, advisable, plausible, tenable, indefensible, imprudent, farfetched, labor intensive, wrongheaded, antiquated, tedious, inefficacious, shortsighted, inapplicable, unobtainable, misguided, incomprehensible, arbitrary, risky, unacceptable, foolish, defensible, anathema, unhelpful, archaic, unsupported, inflexible, incongruous, moot, practicable, sensible, utopian, idealistic, ingenious, unorthodox, ambitious, conceived, chimerical, simple

., don quixote, goldberg, introduction, knight errantry, lackadaisical, laputa, quixotism, reuben lucius goldberg, romanticism, rube goldberg, utopian

airy, armchair, crazy, half-baked, quixotic, romantic, screwball, softheaded, unfunctional, utopian, visionary, wild-eyed