water has 10 distinct synonyms spread across 5 of its 10 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.
binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent
once thought to be one of four elements composing the universe (Empedocles)
a facility that provides a source of water
“the town debated the purification of the water supply”
a liquid necessary for the life of most animals and plants
“he asked for a drink of water”
provide with water
“We watered the buffalo”
Synonyms, antonyms and the broader and narrower relations for water come from Princeton University’s WordNet. Full sources and licences.
secrete or form water, as tears or saliva
“My mouth watered at the prospect of a good dinner”
fill with tears
“His eyes were watering”