60 entries under adjective topic. ×

1
attainable
1
earthly
1
eventual
1
logical(reasonable, obscure, probable, illogical)
1
ostensible(supposed, alleged)
1
practicable
1
practical(unreasonable, unsound)
1
presumptive
1
prone(upright, likely, liable, disinclined)
1
prospective
1
strong
1
tenable(reasonable, likely)
1
valid(false, illegal)
1
workable
0
able
0
acceptable
0
adequate
0
admissible
0
advisable
0
agreeable
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APASmart Define. (2015). unlikely thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unlikely/thesaurus/antonyms
ChicagoSmart Define. 2015. "unlikely thesaurus" https://smartdefine.org/unlikely/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unlikely thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unlikely/thesaurus/antonyms>.
MLASmart Define. "unlikely thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/unlikely/thesaurus/antonyms>