n. An unsuitable alliance, especially an unsuitable marriage
the GNU version of the Collaborative International Dictionary of English
n. A marriage with a person of inferior rank or social station; an improper alliance; a mesalliance.
The Century Dictionary and Cyclopedia
n. An improper alliance or association; specifically, a marriage relation considered as degrading to one of the parties, owing to the inferior birth or standing of the other: in the latter sense often used in the French form, mésalliance.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an unsuitable alliance (especially with regard to marriage)
Word Usage
"In the country of Wild Oats, wit and humor are held in sufficient estimation to win you forgiveness for what fools call a misalliance, and what I call a princely marriage."