As a verb confirm
is to strengthen; to make firm or resolute.
As a noun confirmer is
one who confirms something.
Other Comparisons: What's the difference?
* confirme (obsolete)
To strengthen; to make firm or resolute.
(Christianity) To administer the sacrament of confirmation on (someone).
* 1971 , , Religion and the Decline of Magic , Folio Society 2012, p. 35:
To assure the accuracy of previous statements.
- Elizabeth, daughter of Henry VIII, was baptized and confirmed at the age of three days.
One who confirms something