Browse the Oxford Advanced Learner's Dictionary
- opposite
adjective - opposite
adverb - opposite
noun - opposite
preposition - opposition
noun - oppositional
adjective - oppress
verb - oppressed
adjective - oppression
noun - oppressive
adjective - oppressively
adverb - oppressiveness
noun - oppressor
noun - opprobrious
adjective - opprobrium
noun - opt in
phrasal verb - opt out
phrasal verb - opt
verb - opt-out
noun - optic
adjective - optic
noun - optical
adjective - optical character recognition
noun - optical fibre
noun - optical illusion
noun - optically
adverb - opticals
noun - optician
noun - optics
noun - optimal
adjective - optimally
adverb - optimism
noun - optimist
noun - optimistic
adjective - optimistically
adverb - optimize
verb - optimum
adjective - opting out
noun - option
noun - option
verb - optional
adjective - optometrist
noun - optometry
noun - Optrex
noun - opulence
noun - opulent
adjective - opulently
adverb - opus
noun - or
conjunction - -or
suffix