As adjectives the difference between unionist and unionistic
is that unionist is of or pertaining to unionism while unionistic is of or pertaining to union or unionists; tending to promote or preserve union.
As a noun unionist
is an advocate or supporter of unionism.
unionist
English
Adjective
(
en adjective)
(sometimes, capitalised) Of or pertaining to unionism
Noun
(
en noun)
An advocate or supporter of unionism
A trade unionist