1. [ verb ] recruit for a union or organize into a union
Synonyms: unionize

"We don't allow people to come into our plant and try to unionize the workers"

Related terms: enroll union unionize
2. [ verb ] form or join a union
Synonyms: organize organise unionize

"The autoworkers decided to unionize"

Related terms: join organization union constitution organizer unionization
Similar spelling:   unionised