'Fathomless' definitions:

Definition of 'Fathomless'

From: GCIDE

Fathomless \Fath"om*less\, a.
1. Incapable of being fathomed; immeasurable; that can not be sounded. [1913 Webster]
And buckle in a waist most fathomless. --Shak. [1913 Webster]
2. Incomprehensible. [1913 Webster]
The fathomless absurdity. --Milton. [1913 Webster]