What does the suffix -fy mean? cause or become
the action of
capable of being
>
full of

A suffix is a letter or group of letters, for example '-ly' or '-ness,' which is added to the end of a word in order to form a different word, often of a different word class. For example, the suffix '-ly' is added to 'quick' to form 'quickly. ' Compare affix and , prefix. You may also like. English Quiz.

Explanation:

the rigid outer part of the earth, consisting of the crust and upper mantle is the lithosphere.     answer   crust and outer part of the mantle.