sensitize has 4 distinct synonyms spread across 4 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 one recorded opposite is desensitize.
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 sensitive or aware
“He was not sensitized to her emotional needs”
cause to sense; make sensitive
“She sensitized me with respect to gender differences in this traditional male-dominated society”
Synonyms, antonyms and the broader and narrower relations for sensitize come from Princeton University’s WordNet. Full sources and licences.