'Misalliance' definitions:

Definition of 'misalliance'

From: WordNet
noun
An unsuitable alliance (especially with regard to marriage)

Definition of 'Misalliance'

From: GCIDE
  • Misalliance \Mis`al*li"ance\, n. [F. m['e]salliance.] A marriage with a person of inferior rank or social station; an improper alliance; a mesalliance. [1913 Webster]
  • A Leigh had made a misalliance, and blushed A Howard should know it. --Mrs. Browning. [1913 Webster]

Synonyms of 'misalliance'

From: Moby Thesaurus