'Clear-headedness' definitions:

Definition of 'Clear-headedness'

From: GCIDE

Clear-headed \Clear"-head`ed\ (kl[=e]r"h[e^]d`[e^]d), a. Having a clear understanding; quick of perception; intelligent. "He was laborious and clear-headed." --Macaulay. -- {Clear"-head`ed*ness}, n. [1913 Webster]