etymology of "fellow" interests me.
fellow - O.E. feolaga "partner," from O.N. felagi, from fe
"money" + verbal base denoting "lay." Sense is of "one who
puts down money with another in a joint venture." Used
familiarly since M.E. for "man, male person," but not
etymologically masculine. University senses evolved from
notion of "one of the corporation who constitute a college"
and who are paid from its revenues. At one fell swoop is
from "Macbeth." Fellow-feeling (1613) attempted to
translate L. compassio and Gk. sympatheia. First record of
fellow-traveller "one who sympathizes with the Communist
movement but is not a party member," is from 1936,
translating Rus. poputchik.