school of thought schoo·loft·hought uncommon noun 1. a belief (or system of beliefs) accepted as authoritative by some group or school Synonymsdoctrinephilosophyphilosophical systemschool of thoughtism Related words Word family indoctrinate Broader terms belief Narrower terms nuclear deterrenceKabbalismabolitionismabsolutismamoralismanimalismanimismantiestablishmentarianism WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.