IPA: /ˌmɪsəˈlaɪəns/
KK: /mɪsəˈlaɪəns/
A partnership or connection that is considered inappropriate or unsuitable, often referring to a marriage between people who are not well-matched.
Their misalliance caused much gossip in the community.
Misalliance → It is formed from "mis-" (meaning wrong or bad) and "alliance" (from Old French *aliance*, meaning a union or partnership). The word "misalliance" refers to a wrong or unsuitable union, particularly in marriage or partnership.
Think of a 'wrong' ('mis-') partnership or 'union' ('alliance') — that's what misalliance means.