MISALLIANCE
Source: 566, 567
misalliance. Misalliance, n. an unnatural alliance or union
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Mis′al‐li″ance (?), n. [[F. mésalliance.]] A marriage with a person of inferior rank or social station; an improper alliance; a mesalliance. A Leigh had made a misalliance, and blushed A Howard should know it. Mrs. Browning.