1658 (n.), 1663 (adj.), from L.
proletarius "citizen of the lowest class," in ancient Rome, propertyless people, exempted from taxes and military service, who served the state only by having children; from
proles "offspring, progeny" (see
prolific).
Proletariat is first recorded 1853, from French. Back formation
prole is attested from 1887; popularized by George Orwell's 1949 novel
"Nineteen Eighty-Four."