(a.) Of, pertaining to, or according to, the principles of morphology.

affixal anatomic architectonic architectural constructional derivational descriptive edificial formal glottochronological grammatic graphemic infixal inflectional inflective lexicographic lexicological lexicostatistical lingual linguistic metalinguistic morphemic morphologic morphophonemic organic organismal paradigmatic philological phonemic phonetic phonological prefixal psycholinguistic semantic structural substructural superstructural syntactic tectonic textural