unhatted

Adjective

 * 1) Not wearing a hat; hatless.
 * 2)  Written without a circumflex ('^').
 * 1)  Written without a circumflex ('^').

Usage notes
The use of unhatted to refer to a character that lacks a circumflex is most commonly used in mathematical texts that have related variables with and without the circumflex. Thus, given the variables a and â, these would be referred to as unhatted and hatted instances of the variable a.