Browse the Oxford Advanced Learner's Dictionary
- ominous
adjective - ominously
adverb - omission
noun - omit
verb - omni-
combining form - Omnibus
- omnibus
adjective - omnibus
noun - omnidirectional
adjective - omnipotence
noun - omnipotent
adjective - omnipresence
noun - omnipresent
adjective - omniscience
noun - omniscient
adjective - omnishambles
noun - omnium
noun - omnivore
noun - omnivorous
adjective - on
adverb - on
preposition - On Top of Old Smoky
- on-air
adjective - on-board
adjective - on-call
adjective - on-demand
adjective - on-field
adjective - on-off
adjective - on-ramp
noun - on-screen
adjective - on-screen
adverb - on-street
adjective - on-trend
adjective - onanism
noun - onboard
verb - onboarding
noun - once
adverb - once
conjunction - Once in Royal David's City
- once-over
noun - oncologist
noun - oncology
noun - oncoming
adjective - one another
pronoun - One Flew Over the Cuckoo's Nest
- One Foot in the Grave
- one
number, determiner - one
pronoun - one's
determiner - one-armed bandit
noun