Basque verbs

This article does not give a full list of verb forms; its purpose is to explain the nature and structure of the system. One of the remarkable characteristics of the Basque verb is the fact that only a very few verbs can be conjugated synthetically (i.e. have morphological finite forms); the rest only have non-finite forms, which can enter into a wide variety of compound tense structures (consisting of a non-finite verb form combined with a finite auxiliary) and are conjugated in this way (periphrastically). For example, 'I come' is nator (a synthetic finite form), but 'I arrive' is iristen naiz (a periphrastic form, literally 'arriving I-am'). Synthetically conjugated verbs like 'come' can also be conjugated periphrastically (etortzen naiz). In some such cases the synthetic/periphrastic contrast is semantic (e.g. nator and etortzen naiz are not generally interchangeable); in others the contrast is more a matter of style or register, or else of diachrony (some synthetic forms of conjugation are archaic or obsolete). A few synthetic forms occurring in twentieth-century Basque literature are even a posteriori extrapolations or back-formations of historically unattested forms, created for stylistic, poetic or puristic purposes. Traditionally Basque verbs are cited using a non-finite form conventionally referred to as the participle (although not all its uses are really participial). Other non-finite forms can be derived from the participle, as will be seen in a later section.