As adjectives the difference between extensive and augmentative
is that extensive is in the nature of an extent, wide, widespread while augmentative is growing, enlarging, increasing.
As a noun augmentative is
(grammar) a form of word that expresses large size, intensity, or seniority.
extensive
English
Adjective
(
en adjective)
In the nature of an extent, wide, widespread.
Related terms
* extend
* extent
See also
* intensive
----
augmentative
English
Adjective
(-)
Growing, enlarging, increasing.
Noun
(
en noun)
(grammar) A form of word that expresses large size, intensity, or seniority
Antonyms
* diminutive
Related terms
* augment
* augmentation