Synonyms to pigboat

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, 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, u