2
aloof(adjective, impossible, out-of-the-way, unapproachable, unreachable)
2
away(adjective, impossible, out-of-the-way, unapproachable, unreachable)
2
beyond reach(expression, adjective, inaccessible, impossible, unreachable)
2
contrary to reason(expression, adjective, idiom, unreasonable, useless)
2
distant(adjective, impossible, out-of-the-way, unapproachable, unreachable)
2
elusive(adjective, impossible, out-of-the-way, unapproachable, unreachable)
2
far(adjective, impossible, out-of-the-way, unapproachable, unreachable)
2
far-off(adjective, impossible, out-of-the-way, unapproachable, unreachable)
2
faraway(adjective, impossible, out-of-the-way, unapproachable, unreachable)
2
hardly possible(expression, adjective, unreasonable, useless, absurd)
2
impassable(adjective, unreasonable, useless, absurd, hopeless)
2
impervious(adjective, unreasonable, useless, absurd, hopeless)
2
inapproachable(adjective, inaccessible, impossible, unreachable, unfeasible)
2
inexecutable(adjective, unreasonable, useless, absurd, hopeless)
2
inoperable
2
irreparable(adjective, unreasonable, useless, absurd, hopeless)
2
no-win(adjective, unreasonable, useless, absurd, hopeless)
2
not a prayer(expression, adjective, idiom, unreasonable, useless)
2
out of the question(expression, adjective, idiom, unreasonable, useless)
2
ridiculous
11 years ago|1.3k views|share |citing 
APASmart Define. (2015). unachievable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unachievable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unachievable thesaurus" https://smartdefine.org/unachievable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unachievable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unachievable/thesaurus/synonyms>.
MLASmart Define. "unachievable thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/unachievable/thesaurus/synonyms>