liaison
US /liˈeɪ.zɑːn/
UK /liˈeɪ.zɑːn/
1.
communication or cooperation which facilitates a close working relationship between people or organizations
:
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She acts as a liaison between the two departments.
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We need to establish better liaison with our international partners.
2.
a secret sexual relationship
:
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Rumors of a secret liaison between the politician and his assistant circulated.
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Their illicit liaison was eventually discovered.