Словарь синонимов английского языка - supplementary

(adj) 1. additional, added, annehed, adjunct, new: The supplementary buildings increased the size of the hospital greatly. 2. supplemental, supportive, contributory, ancillary, secondary, subordinate, annexed, additional, attached, added, appended, subsidiary, adscititious; extraneous, adventitious, supervenient, extra, excess; Technical suppletive: The supplementary material expanded the original work five-fold.