Thesaurus > Find Words Starting With O

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Oa is for oath.
Ob is for obviously, observation and objective.
Oc is for occupational and occasionally.
Od is for odor.
Of is for officiate and offset.
Oh is for ohio.
Oi is for oily.
Ol is for old maid and old.
Om is for omit.
On is for one-third.
Op is for opposite.
Or is for originate and or else.
Os is for ossification.
Ot is for other.
Ou is for outlook and oust.
Ov is for overthrow.
Ow is for own(a).
Ox is for oxygen.
Oy is for oyabun.
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