IPA: /ɪnˈɔːspɪʃəs/
KK: /ɪnˈɔːspɪʃəs/
Not likely to bring good fortune or success; considered unlucky or unfavorable.
The dark clouds on the horizon were an inauspicious sign for the outdoor wedding.
Inauspicious → It is formed from "in-" (meaning not) and "auspicium" (from Latin, meaning omen or sign). The word describes something that is not favorable or does not bode well, indicating bad luck or misfortune.
Think of 'not' ('in-') being combined with 'omen' ('auspicium') to remember that 'inauspicious' means something that does not bring good fortune.