You searched for: “accidence
accidence (s) (noun), accidences (pl)
That section of grammar that deals with the inflections or changes in the forms of words: "The accidence of languages that involves words, or parts of words, which are arranged in formally similar sets consisting of a root, or base, and various affixes (prefixes and suffixes).
This entry is located in the following unit: cad-, cas-, cid- (page 1)