Browse the Oxford Advanced Learner's Dictionary
- O Come, All Ye Faithful
- O
exclamation - O grade
noun - O Henry
- O level
noun - O Little Town of Bethlehem
- O
noun - O
symbol - o'
preposition - o'clock
adverb - o'er
adverb, preposition - O'Hare
- O-Bon
noun - o.n.o.
abbreviation - oaf
noun - oafish
adjective - oak
noun - oaked
adjective - oaken
adjective - Oakland
- oakum
noun - OAP
noun - oar
noun - oarlock
noun - oarsman
noun - oarswoman
noun - Oasis
- oasis
noun - oast house
noun - oat
adjective - oat milk
noun - oatcake
noun - oater
noun - oath
noun - oatmeal
adjective - oatmeal
noun - oats
noun - ob-gyn
noun - obbligato
noun - obduracy
noun - obdurate
adjective - obdurately
adverb - OBE
noun - obedience
noun - obedient
adjective - obediently
adverb - obeisance
noun - obelisk
noun - Oberon
- obese
adjective