integrate has 3 distinct synonyms spread across 2 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. Its 2 recorded opposites are disintegrate, differentiate.
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.
make into a whole or make part of a whole
“She incorporated his suggestions into her proposal”
open (a place) to members of all races and ethnic groups
“This school is completely desegregated”
become one; become integrated
“The students at this school integrate immediately, despite their different backgrounds”
calculate the integral of; calculate by integration
Synonyms, antonyms and the broader and narrower relations for integrate come from Princeton University’s WordNet. Full sources and licences.