covenant has 2 distinct synonyms spread across 1 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.
a signed written agreement between two or more parties (nations) to perform some action
(Bible) an agreement between God and his people in which God makes certain promises and requires certain behavior from them in return
Synonyms, antonyms and the broader and narrower relations for covenant come from Princeton University’s WordNet. Full sources and licences.
enter into a covenant
enter into a covenant or formal agreement
“They covenanted with Judas for 30 pieces of silver”