acatalectic has no recorded synonym. 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. Its 2 recorded opposites are catalectic, hypercatalectic.
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.
(prosody) a line of verse that has the full number of syllables
(verse) metrically complete; especially having the full number of syllables in the final metrical foot
Synonyms, antonyms and the broader and narrower relations for acatalectic come from Princeton University’s WordNet. Full sources and licences.