spotlight has 7 distinct synonyms spread across 3 of its 4 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
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 focus of public attention
“he enjoyed being in the limelight”
move into the foreground to make more visible or prominent
“The introduction highlighted the speaker's distinguished career in linguistics”
illuminate with a spotlight, as in the theater
Synonyms, antonyms and the broader and narrower relations for spotlight come from Princeton University’s WordNet. Full sources and licences.