(a.) Serving to promote some other purpose; subordinate; servile\.

abject accepting accessory acquiescent adjuvant agential agentival agentive agreeable ancillary appurtenant assenting assistant assisting auxiliary base client collateral common complaisant compliable compliant complying conducive consenting contributory cowering cringing crouching deferential demeaning dependent disadvantaged employable facilitating favoring fawning feudal feudatory forwarding fostering handy helpful helping humble ignoble in the shade inferior infra dig instrumental intermediary junior less lesser liege low lower lowly mean mediating mediatorial menial ministerial ministering ministrant minor modest nondissenting nonresistant nonresisting nonresistive nurtural nutricial obedient obeisant obsequious on bended knee ordinary passive promoting prone prostrate resigned second rank second string secondary serviceable servile serving slavish sub subaltern subject submissive subordinate subsidiary supine third rank third string tributary truckling unassertive uncomplaining underprivileged unresistant unresisting useful vassal vulgar