communist

Of or relating to a formally constituted Communist Party.

connected with or supporting a political system in which all property is owned by society as a whole

(nonstandard) Alternative letter-case form of communistic, embodying the ideals of communism.

An advocate of a society based on the common ownership of property; a proponent of communism.

A proponent of the kind of communism formally espoused by such a party, typically either Marxism, or more commonly, Leninism or Maoism.

A member of a formally constituted Communist Party.

Any member of an organization, especially a military force, controlled and led by a formally constituted Communist Party, even if most individual members of the organization are not party members.

(nonstandard) Any revolutionary or subversive radical.