2 the quality of being great in extent (as of insight) the deepness of his knowledge on the subject is truly impressive.

Is there a word deepness?

1. The extent or measurement downward from a surface: depth, drop.

What is the synonym of deepness?

In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for deepness, like: surface, depth, drop, profoundness, profundity, thoughts, astuteness, shallowness, blueness, effulgence and blackness.