Uncomprehensible
Part of speech: adjective
Definition: Incomprehensible.
Obscure
Part of speech: verb
Definition: To darken, make faint etc.To hide, put out of sight etc.
Part of speech: adjective
Definition: Dark, faint or indistinct.Hidden, out of sight or inconspicuous,Difficult to understand.
Example sentence: I strive to be brief, and I become obscure.