[4] The prevalent modern view is that Siculian was an Italic language, although the scarcity of sources and the difficulties in interpreting inscriptions and glosses make it impossible to come to a definitive conclusion.

[5] Some inscriptions may reveal Italic elements, such as geped ('had'), which is comparable to the Oscan hipid; dedaxed ('made' ?

), perhaps a reduplicated k-extended form of the root *dʰeh1- similar to Volscian fhe:fhaked and Oscan fefacid; and the female name Kup(a)ra, which evokes the Sabellic *kupro- ('good').

[4] If Siculian is indeed classified as Italic, it would diverge from all its relatives in showing voiced reflexes of the Proto-Indo-European voiced aspirates in initial position, in contrast to the sound changes f < *dʰ, *bʰ and h- < *gʰ/*g̑ʰ, attested in Latin, Sabellic, and Venetic.

[1] According to scholar Markus Hartmann, "of the fewer than thirty inscriptions in total, only six appear to be at least in part intelligible and to be Siculian (i.e., most certainly neither Greek nor belonging to some other Italic or pre-Italic language).