17
inauspicious(adjective, unsuitable, promising, ominous, unpromising)
17
ominous(adjective, good, unsuitable, foreboding, menacing)
15
hopeless(adjective, good, pessimistic, promising, futile)
14
unlucky(adjective, unsuitable)
14
unhappy(adjective, unsuitable)
11
ill
10
unfortunate(adjective, good, unsuitable, lucky)
8
inopportune(adjective, appropriate, suitable, unsuitable)
6
adverse(adjective, antagonistic, unfavorable)
6
catastrophic
6
foreboding
5
baleful(adjective, menacing)
5
calamitous
5
downbeat
5
threatening
5
unpromising(adjective, unsuitable)
4
pessimistic(adjective, feelings, emotions)
4
disastrous
4
menacing
4
sinister
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APASmart Define. (2016). auspicious thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/auspicious/thesaurus/antonyms
ChicagoSmart Define. 2016. "auspicious thesaurus" https://smartdefine.org/auspicious/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, auspicious thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/auspicious/thesaurus/antonyms>.
MLASmart Define. "auspicious thesaurus" 23 March 2016. Web. 21 September 2026. <https://smartdefine.org/auspicious/thesaurus/antonyms>