Learn how to say Stratagems correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word stratagem:
a plan or scheme, especially one used to outwit an opponent or achieve an end:
a series of devious stratagems
[mass noun] archaic skill in devising plans or schemes; cunning.
late 15th century (originally denoting a military ploy): from French stratagème, via Latin from Greek stratēgēma, from stratēgein ‘be a general’, from stratēgos, from stratos ‘army’ + agein ‘to lead’