1667, "subservient, subordinate," from L.
ancillaris "relating to maidservants," dim. of
ancilla "handmaid," fem. dim. of
anculus "servant," lit. "he who bustles about," from root of
ambi- "about" + PIE
*kwol-o-, from base
*kwel- "move round, turn about, be much about" (see
cycle).