THESAURUS
sub
U-boat, U-boot, Unterseeboot, act for, agent, alternate, alternative, analogy, backup, change, change places with, changeling, collateral, common, comparison, copy, counterfeit, crowd out, cut out, demeaning, dependent, deputy, disadvantaged, displace, double, double for, dummy, equal, equivalent, ersatz, exchange, fake, fill in for, fill-in, ghost, ghostwrite, ghostwriter, humble, imitation, in the shade, inferior, infra dig, junior, less, lesser, locum tenens, low, lower, lowly, makeshift, metaphor, metonymy, minor, modest, next best thing, ordinary, personnel, phony, pigboat, pinch hitter, pinch-hit, proxy, relief, relieve, replace, replacement, represent, representative, reserves, ringer, second rank, second string, secondary, servile, sign, spares, spell, spell off, stand in for, stand-in, subaltern, subject, submarine, submersible, subordinate, subrogate, subservient, substituent, substitute, substitute for, substitution, succedaneum, succeed, supersede, superseder, supplant, supplanter, surrogate, swap places with, symbol, synecdoche, third rank, third string, token, tributary, under, underprivileged, understudy, understudy for, utility player, vicar, vice-president, vice-regent, vulgar
ROGET THESAURUS
sub
Inferiority
N
inferiority, minority, subordinacy, shortcoming, deficiency, minimum, smallness, imperfection, lower quality, lower worth, commonalty, inferior, smaller, small, minor, less, lesser, deficient, minus, lower, subordinate, secondary, secondrate,
sub, subaltern, thrown into the shade, weighed in the balance and found wanting, not fit to hold a candle to, can't hold a candle to, least, smallest &c (little) (small), lowest, diminished, reduced, unimportant, less, under the mark, below the mark, below par, at the bottom of the scale, at a low ebb, at a disadvantage, short of, under.