WordNet records no synonym and no antonym for young turk. It is the only member of each of its synsets, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a member of one or more of the insurgent groups in Turkey in the late 19th century who rebelled against the absolutism of Ottoman rule
a young radical who agitates for reform
Synonyms, antonyms and the broader and narrower relations for young turk come from Princeton University’s WordNet. Full sources and licences.