appurtenant

available to supply something extra when needed a store selling tents, sleeping bags, and all manner of appurtenant equipment for a week of roughing it Synonyms accessorial, accessory, auxiliary, peripheral, supplemental, supplementaryRelated Words backup, makeshift, substitute; added, additional, another, further; complementary, contributory; adjuvant, assistant, assisting, helping, supportive, tributary; secondary, subordinate, subservient, subsidiary; dispensable, excess, nonessential, superfluous, surplus, unessentialNear Antonyms basic, fundamental, primary, prime; all-important, essential, imperative, indispensable, integral, necessary, needed, needful, required, requisite, vitalAntonyms chief, main, principal