Antonyms of adj inauspicious

3 senses of inauspicious

Sense 1
inauspicious (vs. auspicious), unfortunate -- (not auspicious; boding ill)

auspicious (vs. inauspicious) -- (auguring favorable circumstances and good luck; "an auspicious beginning for the campaign")
        => bright, hopeful, promising -- (full or promise; "had a bright future in publishing"; "the scandal threatened an abrupt end to a promising political career"; "a hopeful new singer on Broadway")
        => fortunate, rosy -- (presaging good fortune; "she made a fortunate decision to go to medical school"; "rosy predictions")

Sense 2
adverse, inauspicious, untoward -- (contrary to your interests or welfare; "adverse circumstances"; "made a place for themselves under the most untoward conditions")

INDIRECT (VIA unfavorable) -> favorable, favourable -- (encouraging or approving or pleasing; "a favorable reply"; "he received a favorable rating"; "listened with a favorable ear"; "made a favorable impression")

Sense 3
ill, inauspicious, ominous -- (presaging ill fortune; "ill omens"; "ill predictions"; "my words with inauspicious thunderings shook heaven"- P.B.Shelley; "a dead and ominous silence prevailed"; "a by-election at a time highly unpropitious for the Government")

INDIRECT (VIA unpropitious) -> propitious -- (presenting favorable circumstances; likely to result in or show signs of success; "propitious omens"; "propitious gales speeded us along"; "a propitious alignment of planets for space exploration")

Similarity of adj inauspicious

3 senses of inauspicious

Sense 1
inauspicious (vs. auspicious), unfortunate -- (not auspicious; boding ill)
       => unpromising -- (unlikely to bring about favorable results or enjoyment; "faced an unpromising task"; "music for unpromising combinations of instruments")

Sense 2
adverse, inauspicious, untoward -- (contrary to your interests or welfare; "adverse circumstances"; "made a place for themselves under the most untoward conditions")
       => unfavorable (vs. favorable), unfavourable -- (not encouraging or approving or pleasing; "unfavorable conditions"; "an unfavorable comparison"; "unfavorable comments", "unfavorable impression")

Sense 3
ill, inauspicious, ominous -- (presaging ill fortune; "ill omens"; "ill predictions"; "my words with inauspicious thunderings shook heaven"- P.B.Shelley; "a dead and ominous silence prevailed"; "a by-election at a time highly unpropitious for the Government")
       => unpropitious (vs. propitious) -- (not propitious)