Paragogic /(?)/

Par·a·gog·ic

Paragogic

a.
  1. Of, pertaining to, or constituting, a paragoge; added to the end of, or serving to lengthen, a word.

Phrases & Compounds
Paragogic letters
in the Semitic languages, letters which are added to the ordinary forms of words, to express additional emphasis, or some change in the sense.