giving has 9 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. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
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.
the imparting of news or promises etc.
“he gave us the news and made a great show of the giving”
disposing of property by voluntary transfer without receiving value in return
“the alumni followed a program of annual giving”
given or giving freely
“was a big tipper”
Synonyms, antonyms and the broader and narrower relations for giving come from Princeton University’s WordNet. Full sources and licences.