avitus

Noun

 * 1) help, boost

Etymology
From ; but the details of the derivation, such as the provenance of the -ī-, are disputed. According to one analysis, found in Leumann 1977, the term is a "decasuative" formation built on the genitive singular case-form. De Vaan says it is "formed after ", and so apparently views the ending as analogical.

Adjective

 * 1)  grandfatherly
 * 2) ancestral