I. -əə̇st noun
( -s )
Etymology: ultra (I) + -ist
: an adherent of ultraism : extremist , radical
the organ of the Argentine ultraists … roundly rejected Madrid's claim to chieftainship — Times Literary Supplement
II. adjective
or ul·tra·is·tic | ̷ ̷ ̷ ̷|istik
: of, relating to, or characteristic of ultraism