auspicious 6 antonyms and opposites of auspicious. Adj — Suggesting a good outcome; promising or favourable. Synonyms for auspicious auspicial favorable fortunate fortuitous lucky propitious prosperous serendipitous teratical Antonyms for auspicious disastrous ruinous inauspicious ominous foreboding portentous ← Back to the full definition of auspicious
