misalliance (n.)

• abnormality
• alliance
• anomaly
• bed
• cohabitation
• impropriety
• inadmissibility
• inapplicability
• inappositeness
• inappropriateness
• inaptitude
• inaptness
• infelicity
• intermarriage
• irrelevance
• irrelevancy
• maladjustment
• marriage
• match
• matrimony
• mesalliance
• misapplication
• miscegenation
• mismatch
• uncongeniality
• unfitness
• union
• unsuitability
• wedlock