submission has 3 distinct synonyms spread across 3 of its 7 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 act of submitting; usually surrendering power to another
Synonyms, antonyms and the broader and narrower relations for submission come from Princeton University’s WordNet. Full sources and licences.
the condition of having submitted to control by someone or something else
“the union was brought into submission”
a legal document summarizing an agreement between parties in a dispute to abide by the decision of an arbiter
an agreement between parties in a dispute to abide by the decision of an arbiter
(law) a contention presented by a lawyer to a judge or jury as part of the case he is arguing