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This article analyzes the morphosyntactic properties of the most available verbs in Spanish, the configuration of their lexical network, and the argument structures activated by their various classes and subclasses. The study employs the methodology of grammatical availability as a recent development of lexical availability, using word evocation tests and sentence production tests. The results show that the most available verbs tend to be predicative, bivalent, transitive, non-pronominal, and action-oriented, a profile that aligns with the most representative subclasses in linguistic theory, which facilitate processing due to their direct association with specific actions. The generated lexical network suggests that verbs form a natural base category due to the importance of the underlying semantic organization, although grammatical associations are also revealed. Finally, the availability of argument structures largely depends on verbal typology and the cognitive relevance of lexical units. Intransitive verbs generally generate more adjuncts, while transitive verbs tend to activate more explicit arguments. Among intransitives, unaccusative verbs induce more arguments, whereas perception verbs stand out among transitives for their ability to explicitly activate more internal arguments, in contrast to consumption and creation verbs. This work once again highlights the complex interaction between lexicon, syntax, and semantics when building linguistic knowledge and suggests new directions for research in language processing and verbal categorization.