early 15c. (transitive), from Late Latin unitus, past participle of unire "to unite, make into one" (transitive), from Latin unus "one" (from PIE root *oi-no- "one, unique"). Intransitive sense from 1610s. Related: United; uniting.
she unites charm with a good business sense
the Democratic Patry platform united several splinter groups
unit
unitard
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unitary
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United Kingdom
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united states
uniter