liaisonnent

Liaisonnent is the third-person plural present indicative form of the French verb liaisonner, which means to establish a liaison, to liaise, or to maintain communications or coordination between persons, units or organizations. As a grammatical form, it is used for "they" (ils/elles) performing the action: for example, "Ils liaisonnent avec le service central" — "They liaise with the central office."

Liaisonner is a regular -er verb derived from the noun liaison (from French lier, “to bind”), and is commonly found in administrative, military, diplomatic and organizational contexts where coordination or official communication is required. It can also appear in informal contexts to mean making or keeping contact with someone.

In written French the third-person plural ends in -ent, which is not pronounced; the spoken form therefore sounds the same as the third-person singular. Typical usages include coordinating logistics, exchanging information between teams, or acting as an intermediary: for example, "Les officiers liaisonnent avec les unités alliées" ("The officers liaise with allied units").

The verb and its conjugated forms are part of contemporary French registers ranging from formal reports to everyday speech, though other verbs such as communiquer or coordonner may be preferred depending on nuance.