docile has 2 distinct synonyms spread across 2 of its 3 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 stubborn.
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.
willing to be taught or led or supervised or directed
“the docile masses of an enslaved nation”
Synonyms, antonyms and the broader and narrower relations for docile come from Princeton University’s WordNet. Full sources and licences.