WordNet records no synonym and no antonym for disagree with. It is the only member of its synset, 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.
not be very easily digestible
“Spicy food disagrees with some people”
Synonyms, antonyms and the broader and narrower relations for disagree with come from Princeton University’s WordNet. Full sources and licences.