Question

When the root is not a full word, use _____. -able -ible

Answer 1

Answer:

The correct answer is suffix IBLE.

Explanation:

Suffixes "able" and "ible" are added to a word as part of a morphological process to change their meaning and category.

In the case of "able", its root is always a full word as in the adjective "enjoyable" which root is the verb "enjoy".

Instead, the suffix "ible" is added to roots which are not a full word as in the adjective "incredible".  

Answer 2

It is Ible my friend.. Good Luck!