From Mongolic *ɑb- “to take;” hence, Turkic *ɑpɑr “to take, steal, confiscate.” Alternatively, their name may be tied to the Iranic Äpärni or Pärni, the ancestors of the Pärȿäw.

The Pannonian, Western, Turkic, or Pseudo-Avars, as they are sometimes referred to as, are ultimately Hunnish remnants of the Northern Hoŋa, who either joined or were absorbed into the Tägäräk confederation upon the collapse of the Northern Hoŋa state. Upon their migration West, they likely adopted the historic name of the ancient Avar, a Mongolic tribe that once roamed Inner-Asia. Therefore, the Avar we speak of here are not the Avar (烏丸) that are also mentioned as loyal to the Tabğaç state of Northern Wei, who were likely the descendants of the original Avar.

Priscus is the first to mention the Avar in the West. In ca. 463 C.E., he claims that the Avar (Ἀβάρις) were responsible for expelling the Savar from their lands. It is also mentioned that the Avar, themselves, were displaced by another group fleeing man-eating griffons. However, nearly two centuries later, the Book of Sui lists both the Avar (烏讙) and the Savar as occupying territory “west of Yi-wu (伊吾), north of Agni (焉耆), and on the side of Aqtağ Mountain (白山).” At that time, both tribes were members of the Tägäräk confederation, capable of raising 20,000 fighting men each. The Kök Türük lord Tamğan, in a mid-5th century C.E. letter to the Romans, also claims a fighting force of 20,000 for the Avar. It can therefore be reasoned that the Avar of the 5th century C.E. were one and the same as the Avar of the 6th and 7th century C.E.