Synonyms|24Antonyms|34|Broader|0Narrower|0Related|105
7
unattainable
6
unachievable
6
unrealizable
2
insuperable
1
beyond one
1
hopeless
1
impossible
1
impractical
1
inaccessible
1
inoperable
1
insurmountable
1
reversibility
1
unfeasible
1
unobtainable
1
unworkable
0
abolishable
0
abrogable
0
deposable
0
insoluble
0
insolvable
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APASmart Define. (2015). undoable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/undoable/thesaurus/synonyms
ChicagoSmart Define. 2015. "undoable thesaurus" https://smartdefine.org/undoable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, undoable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/undoable/thesaurus/synonyms>.
MLASmart Define. "undoable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/undoable/thesaurus/synonyms>