Antonyms of adj unpromising

1 sense of unpromising

Sense 1
unpromising -- (unlikely to bring about favorable results or enjoyment; "faced an unpromising task"; "music for unpromising combinations of instruments")

INDIRECT (VIA inauspicious) -> auspicious -- (auguring favorable circumstances and good luck; "an auspicious beginning for the campaign")

Similarity of adj unpromising

1 sense of unpromising

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