socialist

socialist /ˈsoʊʃəlɪst/ noun
plural socialists
socialist
/ˈsoʊʃəlɪst/
noun
plural socialists
Britannica Dictionary definition of SOCIALIST
[count]
1 
: a person who believes in socialism
2 
Socialist : a member of a political party that supports socialism

— socialist

or Socialist adjective

— socialistic

/ˌsoʊʃəˈlɪstɪk/ adjective