Antonyms of adj impractical

2 senses of impractical

Sense 1
impractical (vs. practical) -- (not practical; not workable or not given to practical matters; "refloating the ship proved impractical because of the expense"; "he is intelligent but too impractical for commercial work"; "an impractical solution")

practical (vs. impractical) -- (concerned with actual use or practice; "he is a very practical person"; "the idea had no practical application"; "a practical knowledge of Japanese"; "woodworking is a practical art")
        => applicative, applicatory -- (readily applicable or practical)
        => functional -- (designed for or adapted to a function or use; "functional education selects knowledge that is concrete and usable rather than abstract and theoretical"; "functional architecture")
        => interoperable -- (able to exchange and use information)
        => matter-of-fact, pragmatic, pragmatical -- (concerned with practical matters; "a matter-of-fact (or pragmatic) approach to the problem"; "a matter-of-fact account of the trip")
        => operable, practicable -- (usable for a specific purpose; "an operable plan"; "a practicable solution")
        => serviceable -- (intended or able to serve a purpose without elaboration; "serviceable low-heeled shoes";)
        => unimaginative -- (dealing only with concrete facts)
        => working -- (adequate for practical use; especially sufficient in strength or numbers to accomplish something; "the party has a working majority in the House"; "a working knowledge of Spanish")

Sense 2
airy, impractical, visionary, Laputan, windy -- (not practical or realizable; speculative; "airy theories about socioeconomic improvement"; "visionary schemes for getting rich")

INDIRECT (VIA utopian) -> dystopian -- (as bad as can be; characterized by human misery; "AIDS is one of the dystopian harbingers of the global villages"- Susan Sontag)

Similarity of adj impractical

2 senses of impractical

Sense 1
impractical (vs. practical) -- (not practical; not workable or not given to practical matters; "refloating the ship proved impractical because of the expense"; "he is intelligent but too impractical for commercial work"; "an impractical solution")
       => crazy, half-baked, screwball, softheaded -- (foolish; totally unsound; "a crazy scheme"; "half-baked ideas"; "a screwball proposal without a prayer of working")
       => meshugge, meshugga, meshuga, meshuggeneh, meshuggener -- (senseless; crazy)
       => quixotic, romantic, wild-eyed -- (not sensible about practical matters; idealistic and unrealistic; "as quixotic as a restoration of medieval knighthood"; "a romantic disregard for money"; "a wild-eyed dream of a world state")
       => unfunctional -- (not related to or suitable for everyday needs or activities)
       => unwieldy -- (difficult to work or manipulate; "unwieldy rules and regulations")
          Also See-> impossible#1; unrealistic#1

Sense 2
airy, impractical, visionary, Laputan, windy -- (not practical or realizable; speculative; "airy theories about socioeconomic improvement"; "visionary schemes for getting rich")
       => utopian (vs. dystopian) -- (characterized by or aspiring to impracticable perfection; "the dim utopian future"; "utopian idealists"; "recognized the utopian nature of his hopes")