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I have two questions.

Is it uniform police officer, or uniformed police officer?

Is is plainclothes officer, or plain-clothed officer?

Does it matter? Are they interchangeable words?
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Is it uniform police officer, or uniformed police officer?
Is it plainclothes officer, or plain-clothed officer?
(I sometimes hear "plainclothes officer" used casually by native speakers.)
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uniformed officers and plainclothes officers

http://www.merriam-webster.com/dictionary/plainclothes

This dictionary has no entry for "plainclothed" or "plain-clothed". (And I don't believe I've ever heard that word.)

CJ
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Comments  
CalifJimI don't believe I've ever heard that word.
Thanks for the correction, Jim. Google doesn't like it either! Emotion: embarrassed

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