A formalized version of WP must recognize the morpheme as the minimal grammatical (not semantic!) unit of a language, but it makes the word the unit that carries in its paradigmatic and syntagmatic associations the main weight of grammatical description.
- Robins (2004), a pag.139

The main distinctive characteristics of a formalized WP model grammatical description would then be the following: the word is taken as the basic unit of both syntax and morphology, and variable words are grouped into paradigms for the statement of their morphological forms and the listing of their various syntactic functions.
- Robins (2004), a pag.144