"scanty, small, diminutive," 1650s, from Latin exiguus "small, short; petty, paltry, poor, mean; scanty in measure or number; strict," literally "measured, exact," from exigere "to drive out, take out," also "to finish, measure," from ex "out" (see ex-) + agere "to set in motion, drive, drive forward; to do, perform" (from PIE root *ag- "to drive, draw out or forth, move"). Compare immense "huge," literally "unmeasured."