4 words for IMMOS 1-letter words

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1 letter (4)

i m o s
Enfranchised individual
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V
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O
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T
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E
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R
Hint 1 meaning
One who votes; one who has a legal right to vote, or give his suffrage; an elector; a suffragist; as, an independent voter.
Hint 2 anagram
TEVOR
Hint 3 another clue
Dweller
14 +1