'Throughly' definitions:

Definition of 'Throughly'

From: GCIDE

Throughly \Through"ly\, adv. Thoroughly. [Obs.] --Bacon. [1913 Webster]
Wash me throughly from mine iniquity. --Ps. li. 2. [1913 Webster]
To dare in fields is valor; but how few Dare to be throughly valiant to be true? --Dryden. [1913 Webster]