Definition of free will men in US English:

free will men

noun

historical
  • Those who defend the doctrine of free will against strong versions of the doctrine of predestination; especially a group of 16th-cent. English dissenters characterized by their anti-predestinarian theology.

Origin

Mid 16th century; earliest use found in Robert Crowley (d. 1588), author, Church of England clergyman, and printer.