Inauspicious (adjective)

1. Not giving or being a sign of future success.
2. Not encouraging or propitious; not likely to bring success or good fortune.

Origin:

Mid 17th century: from in- (expressing negation) + auspicious.

Examples:

1. An inauspicious start to the campaign.
2. The weather was inauspicious for the outdoor concert.
3. The inauspicious economic indicators.
4. The inauspicious signs for the company's future.
5. The inauspicious omens for the journey.