41 entries under impossible topic. ×

22
impracticable(adjective, wild, unreasonable, useless, absurd)
18
impractical(adjective, stupid, unreasonable, idle, useless)
17
useless(adjective, wild, unreasonable, useless, valuable)
15
unfeasible(adjective, unreasonable, useless, absurd, impractical)
14
impossible(adjective, wild, unreasonable, useless, absurd)
14
unattainable(adjective, unreasonable, useless, absurd, excessive)
13
infeasible(adjective, wild, unreasonable, useless, absurd)
11
visionary(adjective, wild, unreasonable, useless, absurd)
9
hopeless(adjective, stupid, unreasonable, idle, useless)
9
unrealizable(adjective, unreasonable, possible, inaccessible)
8
absurd(adjective, wild, foolish, unreasonable, useless)
6
futile(adjective, stupid, unreasonable, idle, useless)
6
inconceivable
6
preposterous(adjective, foolish, unreasonable, fantastic, useless)
6
unachievable
6
unreasonable(adjective, useless, absurd, preposterous)
4
inaccessible(adjective, out)
4
unimaginable
4
unthinkable(adjective, possible)
3
insurmountable
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APASmart Define. (2016). unworkable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unworkable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unworkable thesaurus" https://smartdefine.org/unworkable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, unworkable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unworkable/thesaurus/synonyms>.
MLASmart Define. "unworkable thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/unworkable/thesaurus/synonyms>