“Blocking” is a phenomenon that is characteristic of human language in general, but its precise nature and scope are still controversial. As will become apparent, theoretical accounts of the phenomenon also differ widely. In order to gain some initial understanding of what blocking is about, let us vaguely define it with Mark Aronoff’s Word Formation in Generative Grammar (Aronoff 1976, cited under Overviews) as “the nonoccurrence of one form due to the simple existence of another” (p. 43). The most typical instantiations occur in inflection and derivation, where went blocks *goed, and thief blocks* stealer. Most linguists also allow for blocking to operate across the morphology-syntax boundary. The staple example here is the English comparative, where adjectives suffixed with -er are said to block the corresponding phrases consisting of more + adjective (e.g., bigger blocking *more big). The absence of regular semantic extensions is also sometimes attributed to blocking, e.g., the oddness of *(I don’t eat) pig “pig meat,” blocked by pork, or *(I like) cow “cow meat,” blocked by beef. Occasionally, blocking is claimed to operate syntax-internally, as when the ill-formedness of the French sentence type *J’ai vu lui (“I have seen him”) is attributed to the existence of the sentence type “Je l’ai vu” (literally “I him have seen”). Still more exceptionally, syntax is claimed to block morphology: the oddness of incorporated verbs such as to truck-drive, for example, has been attributed to the corresponding syntactic constructions of the type to drive trucks. In all these examples, the blocking and the blocked forms are synonyms. Some scholars, however, believe that a form can also be blocked by a homonym, as in *to spring/fall in France vs. to summer/autumn/winter in France.
Blocking