The Basque verb system (Euskal aditza) is famously complex. Unlike English or Spanish, Basque verbs are polypersonal —meaning they agree not only with the subject but also with the direct object and the indirect object. A complete verb table in Basque therefore has many dimensions. 1. What a Standard Basque Verb Table Includes Most learner-friendly tables focus on the most common auxiliary verbs (because most verbs are built periphrastically) plus a few synthetic verbs .