impractical

Something impractical is difficult or impossible to achieve. It might sound like a great idea, but it's not going to happen. It's just not practical.

Impractical ideas make no sense or just can’t be done. Heels so high you have a fish swimming in them are cool, but very impractical. Trying to drive from New York to California in four hours, which could never happen, is impractical. Something impractical is not likely to work. Practical ideas are feasible, but impractical ideas are based on wishful thinking. When someone tells you an idea is impractical, she’s saying, "Get real."

Definitions of impractical
1

adj 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”
Synonyms:
impossible
not capable of occurring or being accomplished or dealt with
crazy, half-baked, screwball, softheaded
foolish; totally unsound
meshuga, meshugga, meshugge, meshuggeneh, meshuggener
senseless; crazy
quixotic, romantic, wild-eyed
not sensible about practical matters; idealistic and unrealistic
unfunctional
not related to or suitable for everyday needs or activities
unwieldy
difficult to work or manipulate
unrealistic
not realistic
Antonyms:
practical
concerned with actual use or practice
concrete
capable of being perceived by the senses; not abstract or imaginary
possible
capable of happening or existing
applicative, applicatory
readily applicable or practical
functional
designed for or adapted to a function or use
interoperable
able to exchange and use information
matter-of-fact, pragmatic, pragmatical
concerned with practical matters
operable, practicable
usable for a specific purpose
serviceable
intended or able to serve a purpose without elaboration
unimaginative
dealing only with concrete facts
working
adequate for practical use; especially sufficient in strength or numbers to accomplish something
realistic
aware or expressing awareness of things as they really are
serviceable
ready for service or able to give long service
show more antonyms...

adj not practical or realizable; speculative

Synonyms:
Laputan, airy, visionary, windy
utopian
characterized by or aspiring to impracticable perfection

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