13 letter adjectives that start with O

We have listed 40 13-letter adjectives that start with O for you in this WordMom word list. All these 13-letter adjectives starting with O were verified by specialists in the English language.

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  • objectionable
  • observational
  • obstetricious
  • ochlocratical
  • occipitoaxial
  • odontophorous
  • odontographic
  • oligosepalous
  • oligospermous
  • oligopetalous
  • omnicorporeal
  • omniprevalent
  • onomatopoetic
  • opportunistic
  • ophiomorphous
  • oropharyngeal
  • orismological
  • organographic
  • organological
  • orthognathous
  • orthospermous
  • orthocarbonic
  • organoplastic
  • organotrophic
  • oryctological
  • overconfident
  • overemotional
  • overambitious
  • oversensitive
  • overindulgent
  • ovoviviparous
  • overcredulous
  • overbounteous
  • overdelighted
  • overprovident
  • overlanguaged
  • overexquisite
  • overponderous
  • overrighteous
  • overofficious

13 letter adjectives that start with