1. Unlikely to bring about favourable results or enjoyment
   "faced an unpromising task"; "music for unpromising combinations of instruments"

See also: inauspicious, unfortunate

• Oom Paul Kruger
• oomph
• Oomycetes
• oooh
• oophorectomy
• oophoritis
• oophorosalpingectomy
• oops
• oops-a-daisy
• Oort
• Oort cloud
• oosphere
• oospore
• ootid
• ooze
• ooze leather
• ooze out
• ooze through
• oozing
• oozy
• op
• op art
• op shop
• op-ed
• op. cit.