1) An unsuitable alliance 2) Marriage 3) Matrimony 4) Play by George Bernard Shaw 5) Spousal relationship 6) Union 7) Wedlock 1) Mesalliance 
Misalliance is a play written in 1909–1910 by George Bernard Shaw. Misalliance takes place entirely on a single Saturday afternoon in the conservatory of a large country house in Hindhead, Surrey in Edwardian era England. It is a continuation of some of the ideas on marriage that he expressed in 1908 in his play, Getting Married. It was also a c...
• (n.) A marriage with a person of inferior rank or social station; an improper alliance; a mesalliance.
Mis`al·li'ance noun [ French 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. 
[n] - an unsuitable alliance (especially with regard to marriage)
noun an unsuitable alliance (especially with regard to marriage)