Thesaurus > Find Words Starting With O

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Oa is for oath.
Ob is for objection.
Oc is for occasional(a) and october.
Od is for odd.
Of is for officiate and of age(p).
Oh is for ohio.
Oi is for oily.
Ol is for old testament, old boy and old.
Om is for ominous.
On is for one hundred, once and one-third.
Op is for opening, operator and open.
Or is for originate in and ordinarily.
Os is for ossification.
Ot is for other.
Ou is for out, output and ounce.
Ov is for overthrow and over.
Ow is for owe.
Ox is for oxidation.
Oy is for oyabun.
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