stratagem

From Middle English stratageme, from Old French stratageme, from Latin strategema, from Ancient Greek στρατήγημα (stratḗgēma, “the act of a general, a piece of generalship”), from στρατηγέω (stratēgéō, “to be a general, command an army”), from στρατηγός (stratēgós, “a general, the leader or commander of an army”). See strategy.