requisition has 2 distinct synonyms spread across 2 of its 5 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 one recorded opposite is derequisition.
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 requiring; an authoritative request or demand, especially by a military or public authority that takes something over (usually temporarily) for military or public use
an official form on which a request in made
“first you have to fill out the requisition”
Synonyms, antonyms and the broader and narrower relations for requisition come from Princeton University’s WordNet. Full sources and licences.
seizing property that belongs to someone else and holding it until profits pay the demand for which it was seized
make a formal request for official services
demand and take for use or service, especially by military or public authority for public service