Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb unionise

2 senses of unionise

Sense 1
unionize, unionise -- (recruit for a union or organize into a union; "We don't allow people to come into our plant and try to unionize the workers")
       => enroll, inscribe, enter, enrol, recruit -- (register formally as a participant or member; "The party recruited many new members")

Sense 2
unionize, unionise, organize, organise -- (form or join a union; "The auto workers decided to unionize")
       => join, fall in, get together -- (become part of; become a member of a group or organization; "He joined the Communist Party as a young man")