Synonyms and related words :
accessory, adjuvant, agential, agentival, agentive, ancillary, assistant, assisting, attendant, attending, auxiliary, conducive, employable, facilitating, favoring, forwarding, fostering, handy, helpful, helping, instrumental, intermediary, mediating, mediatorial, menial, ministerial, ministrant, nurtural, nutricial, promoting, serviceable, servile, serving, servitorial, subservient, subsidiary, useful, waiting