auspiciousPronunciation: /ɔːˈspɪʃəs/Translate auspicious | into French | into German | into Italian | into Spanish Definition of auspicious adjective conducive to success; favourable:it was not the most auspicious moment to hold an election giving or being a sign of future success:they said it was an auspicious moon—it was rising archaic characterized by success; prosperous: he was respectful to his auspicious customersDerivatives auspiciously adverb auspiciousness noun Origin: late 16th century: from auspice + -ousauspicious in other Oxford dictionaries Definition of auspicious in the US English dictionary