Synonyms for Boring

Synonyms starting with letter O

• ordinary

  humdrum
• oil production
• old

  uninteresting
• overlong
• old-fashioned
• onerous
• old hat
• obsequious
• out of date
• opening
• orifice
• one-horse
• overused
• obnoxious
• obtuse
• oppressive
• overcast
• obeisant
• old-time
• out-of-date
• outdated
• outmoded
• on a treadmill
• obscure
• on treadmill
• ornery

  dullsville
• overworked
• overdone
• overelaborate
• old fashioned
• oft-repeated
• offensive
• open
• of no account
• out of place
• of no consequence
• out of gas
• over-serious
• opening up by drilling
• obligatory