| trade unionist | (n) a worker who belongs to a trade union, Syn. unionist, union member |
| unionidae | (n) freshwater mussels found worldwide, Syn. family Unionidae |
| unionism | (n) the system or principles and theory of labor unions, Syn. trade unionism |
| unionization | (n) act of forming labor unions, Syn. unionisation |
| unionize | (v) recruit for a union or organize into a union, Syn. unionise |
| unionize | (v) form or join a union, Syn. organise, unionise, organize |
| nonionized | (adj) not converted into ions, Syn. unionized, unionised, nonionised, nonionic, Ant. ionized |
| unorganized | (adj) not affiliated in a trade union, Syn. nonunionised, nonunionized, unorganised |
| Disunionist | n. An advocate of disunion, specifically, of disunion of the United States. [ 1913 Webster ] |
| Nonunionist | n. One who does not belong, or refuses to belong, to a trades union. [ 1913 Webster ] |
| Trade-unionist | { }, n. A member of a trades union, or a supporter of trades unions. [ 1913 Webster ] Variants: Trades-unionist |
| Unionism | n. 1. The sentiment of attachment to a federal union, especially to the federal union of the United States. [ 1913 Webster ] 2. The principles, or the system, of combination among workmen engaged in the same occupation or trade. [ 1913 Webster ] |
| Unionist | n. 1. One who advocates or promotes union; especially a loyal supporter of a federal union, as that of the United States. [ 1913 Webster ] 2. A member or supporter of a trades union. [ 1913 Webster ] |
| Unionistic | a. Of or pertaining to union or unionists; tending to promote or preserve union. [ 1913 Webster ] |
