| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | extra; supplementary |
| Synonyms: | accessory, accompanying, additional, adjuvant, appurtenant, attendant, attending, coincident, collateral, concomitant, contributory, incident, satellite, secondary, subordinate, subservient, subsidary |
| Antonyms: | necessary, needed |
| Main Entry: | catalyst |
| Part of Speech: | noun |
| Definition: | something which incites activity |
| Synonyms: | adjuvant, agitator, enzyme, goad, impetus, impulse, incendiary, incentive, incitation, incitement, motivation, radical stimulus, reactant, reactionary, spark plug, spur, stimulant, synergist, wave maker |
| Antonyms: | block, blockage, preventer, prevention |
| Main Entry: | collateral |
| Part of Speech: | adjective |
| Definition: | indirect, secondary |
| Synonyms: | accessory, accompanying, added, adjunctive, adjuvant, ancillary, appurtenant, attendant, auxiliary, circuitous, coincident, complementary, concomitant, concurrent, confirmatory, coordinate, corresponding, corroborative, dependent, incident, lateral, not lineal, parallel, related, roundabout, satellite, side, sub, subordinate, subservient, subsidiary, supporting, tributary, under |
| Antonyms: | chief, direct, main, primary, principal |
| Main Entry: | concomitant |
| Part of Speech: | adjective |
| Definition: | contributing, accompanying |
| Synonyms: | accessory, adjuvant, agreeing, ancillary, associated with, associative, attendant, attending, belonging, coefficient, coetaneous, coeval, coexistent, coincident, coincidental, collateral, complementary, concordant, concurrent, conjoined, conjoined with, connected, contemporaneous, contemporary, coordinate, corollary, coterminous, coupled with, fellow, in tempo, in time, incident, isochronal, isochronous, joint, satellite, synchronal, synchronous, synergetic, synergistic |
| Antonyms: | accidental, chance, unrelated |
| 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: | subservient |
| Part of Speech: | adjective |
| Definition: | secondary, useful |
| Synonyms: | accessory, adjuvant, ancillary, appurtenant, auxiliary, bush-league, collateral, conducive, contributory, flunky, helpful, inferior, instrumental, minor, serviceable, subordinate, subsidiary, supplemental, supplementary |
| Antonyms: | unhelpful, unnecessary, useless |
| Main Entry: | subsidiary |
| Part of Speech: | adjective |
| Definition: | secondary, helpful |
| Synonyms: | accessory, adjuvant, aiding, ancillary, appurtenant, assistant, assisting, auxiliary, backup, branch, collateral, contributory, cooperative, lesser, minor, serviceable, subject, subordinate, subservient, supplemental, supplementary, tributory, useful |
| Antonyms: | chief, important, necessary |
| Main Entry: | leavening |
| Part of Speech: | noun |
| Definition: | catalyst |
| Synonyms: | adjuvant, agitator, enzyme, ferment, goad, impetus, impulse, incendiary, incentive, incitation, incitement, leaven, motivation, radical stimulus, reactant, reactionary, spark plug, spur, stimulant, synergist, wave maker, yeast |
| Main Entry: | supportive |
| Part of Speech: | adjective |
| Definition: | auxiliary |
| Synonyms: | abetting, accessory, adjuvant, ancillary, appurtenant, assistant, backup*, collateral, complementary, contributory, extra, reserve, secondary, spare, subordinate, subservient, subsidiary, supporting |