WordNet records no synonym and no antonym for morph. 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.
cause to change shape in a computer animation
“The computer programmer morphed the image”
change shape as via computer animation
“In the video, Michael Jackson morphed into a panther”
Synonyms, antonyms and the broader and narrower relations for morph come from Princeton University’s WordNet. Full sources and licences.