- 1 [intransitive] liaise (with somebody) to work closely with someone and exchange information with them He had to liaise directly with the police while writing the report.
- 2 [intransitive] liaise (between A and B) to act as a link between two or more people or groups Her job is to liaise between students and teachers.
NAmE//liˈeɪz//Verb Forms present simple I / you / we / they liaise
he / she / it liaises
past simple liaised
-ing form liaising