accidence /ˈæk.sɪ.dəns/ noun3 •The inflection of words.To teach Schollars how to bee able to reade well, and write true Orthography, in a short space. 2. To make them ready in all points of Accedence and Grammar, to answere any necessary question therein. — 1627 •A book containing the first principles of grammar; (by extension) a book containing the rudiments of any subject or art.And forsomuch as this treateth of blazon of Armes, and of the worthie bearers of them […] I therefore, have named this, the Accedence of Armorie […] — 1562 •The rudiments of any subject. formsaccidences