| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | at the mercy of; answerable |
| Synonyms: | accountable, apt, at one's feet, bound by, captive, collateral, conditional, contingent, controlled, dependent, directed, disposed, enslaved, exposed, governed, in danger of, inferior, liable, likely, obedient, open, prone, provisional, ruled, satellite, secondary, sensitive, servile, slavish, sub, subaltern, subjugated, submissive, subordinate, subservient, substract, susceptible, tentative, tributary, under, vulnerable |
| Antonyms: | master |
| Main Entry: | subordinate |
| Part of Speech: | adjective |
| Definition: | lesser, supplementary |
| Synonyms: | accessory, adjuvant, ancillary, auxiliary, baser, below par, collateral, contributory, dependent, inferior, insignificant, junior, low, lower, minor, paltry, satellite, second-fiddle, second-string, secondary, smaller, sub, subaltern, subalternate, subject, submissive, subnormal, subservient, subsidiary, substract, tributary, under, underaverage, unequal |
| Antonyms: | chief, important, major, necessary, superior, vital |
| Main Entry: | substitute |
| Part of Speech: | noun |
| Definition: | someone or something that takes the place of another |
| Synonyms: | agent, alternate, assistant, auxiliary, backup, changeling, delegate, deputy, dernier ressort, double, dummy, equivalent, expediency, expedient, fill-in, ghost, ghost writer, locum, locum tenens, makeshift, pinch-hitter, procurator, proxy, recourse, refuge, relay, relief, replacement, representative, reserve, resort, resource, stand-in, standby, stopgap, sub, succedaneum, successor, supplanter, supply, surrogate, symbol, temp, temporary, temporary expedient, understudy, vicar |
| Antonyms: | permanent |
| Main Entry: | substitute |
| Part of Speech: | verb |
| Definition: | interchange, exchange |
| Synonyms: | act for, alternate, answer for, back up, be in place of, change, commute, cover for, deputize, displace, do the work of, double for, fill in for, fill one's position, go as, proxy, relieve, replace, serve in one's stead, spell, stand for, stand in for, sub, supersede, supplant, swap, swap places with, switch, take another's place, take over |
| Main Entry: | surrogate |
| Part of Speech: | noun |
| Definition: | person or thing that acts as |
| Synonyms: | alternate, backup, delegate, deputy, expediency, expedient, fill-in, makeshift, pinch hitter, proxy, recourse, refuge, replacement, representative, resort, resource, stand-in, stopgap, sub, substitute agent |
| Antonyms: | real |
| Main Entry: | tributary |
| Part of Speech: | adjective |
| Definition: | secondary; branch |
| Synonyms: | accessory, dependent, feeding, minor, satellite, shoot, side, sub, subject, subordinate, under |
| Antonyms: | original, primary, source |
| Main Entry: | under |
| Part of Speech: | adverb |
| Definition: | secondary |
| Synonyms: | amenable, belonging, collateral, consequent, corollary, dependent, directed, following, governed, in the power of, included, inferior, junior, lesser, low, lower, obedient, obeying, reporting, sub, subject, subjugated, subordinate, subsequent, subservient, subsidiary, substract, subsumed |
| Antonyms: | major, primary |
| Main Entry: | understudy |
| Part of Speech: | noun |
| Definition: | substitute |
| Synonyms: | alternate, backup, double, fill-in, pinch hitter, replacement, reserve, stand-by, stand-in, sub, successor |
| Main Entry: | hero sandwich |
| Part of Speech: | noun |
| Definition: | large sandwich |
| Synonyms: | blimpie, grinder, hero, hoagie, hoagy, poorboy, sub, submarine, submarine sandwich, wedge |