"augmentative" in the adjective sense
increasing or having the power to increase especially in size or amount or degree
"`up' is an augmentative word in `hurry up'"
2. augmentative, enhancive
intensifying by augmentation and enhancement
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License