interpretation has 5 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 mental representation of the meaning or significance of something
the act of interpreting something as expressed in an artistic performance
“her rendition of Milton's verse was extraordinarily moving”
an explanation that results from interpreting something
“the report included his interpretation of the forensic evidence”
an explanation of something that is not immediately obvious
“the edict was subject to many interpretations”
Synonyms, antonyms and the broader and narrower relations for interpretation come from Princeton University’s WordNet. Full sources and licences.