A person who helps groups work together by passing information between them. It can also mean a close working relationship or, more formally, a secret romantic relationship.
From French *liaison* meaning “a binding or linking,” from *lier* (to bind), from Latin *ligare* (to tie). It originally referred to a link or thickening in cooking, then expanded to social and military contexts.
The word for a person who connects groups comes from the same root as ‘ligament’ and ‘religion’—all about binding things together. Even in linguistics, ‘liaison’ describes sounds linking across word boundaries.
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