-atico

Etymology
Most likely. , from or.

This suffix was traditionally seen as a borrowing from Latin, as it was believed that would be expected to develop into  via  of the post-tonic vowel (such as in  < ); furthermore, most words formed with this suffix are learned terms, such as  (← ).

However, the claim that is the regular reflex of  is unwarranted; Fleischman (citing E. L. Dawson) notes that "a thorough examination of Medieval Latin and Italian texts has not only failed to produce a single example in, but also discovered none showing syncope of the posttonic vowel between a dental and a velar". She also adduces a solid core of non-learned formations using, such as (< ).