brave has 12 distinct synonyms spread across 4 of its 6 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 cowardly, timid.
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.
possessing or displaying courage; able to face and deal with danger or fear without flinching
“Familiarity with danger makes a brave man braver but less daring”
Synonyms, antonyms and the broader and narrower relations for brave come from Princeton University’s WordNet. Full sources and licences.