Definition of augmentative in English:

augmentative

adjective

Linguistics
  • (of an affix or derived word) reinforcing the idea of the original word, especially by meaning ‘a large one of its kind’, as with the Italian suffix -one in borrone ‘ravine’, compared with borro ‘ditch’.

Origin

Late Middle English (in the sense ‘having a tendency to increase’): from Old French augmentatif, -ive or medieval Latin augmentativus, from the verb augmentare (see augment).

Pronunciation:

augmentative

/ɔːɡˈmɛntətɪv/