unpromising (adj.)
- adverse
- apocalyptic
- bad
- baleful
- baneful
- black
- boding
- dark
- dire
- doubtable
- doubtful
- dreary
- dubious
- dubitable
- evil
- fateful
- foreboding
- gloomy
- hopeless
- ill
- ill-fated
- ill-omened
- ill-starred
- implausible
- improbable
- inauspicious
- incredible
- lowering
- menacing
- ominous
- portentous
- questionable
- sinister
- somber
- threatening
- unfavorable
- unfortunate
- unlikely
- unlucky
- unpropitious
- untoward
