Celtiberian language

Celtiberian or Northeastern Hispano-Celtic is an extinct Indo-European language of the Celtic branch spoken by the Celtiberians in an area of the Iberian Peninsula between the headwaters of the Douro, Tagus, Júcar and Turia rivers and the Ebro river. This language is directly attested in nearly 200 inscriptions dated from the 2nd century BC to the 1st century AD, mainly in Celtiberian script, a direct adaptation of the northeastern Iberian script, but also in the Latin alphabet. The longest extant Celtiberian inscriptions are those on three Botorrita plaques, bronze plaques from Botorrita near Zaragoza, dating to the early 1st century BC, labeled Botorrita I, III and IV (Botorrita II is in Latin). Shorter and more fragmentary is the Novallas bronze tablet.

Under the P/Q Celtic hypothesis, and like its Iberian relative Gallaecian, Celtiberian is classified as a Q Celtic language, putting it in the same category as Goidelic and not P-Celtic like Gaulish or Brittonic.

Under the Insular/Continental Celtic hypothesis, Celtiberian and Gaulish are grouped together as Continental Celtic languages but this grouping is paraphyletic: no evidence suggests the two shared any common innovation separately from Insular Celtic. According to Ranko Matasovic in the introduction to his 2009 Etymological Dictionary of Proto-Celtic : "Celtiberian...is almost certainly an independent branch on the Celtic genealogical tree, one that became separated from the others very early."

Celtiberian has a fully inflected relative pronoun ios (as does, for instance, Ancient Greek), an ancient feature that was not preserved by the other Celtic languages, and the particles -kue 'and' < *kʷe (cf. Latin -que, Attic Greek τε te), nekue 'nor' < *ne-kʷe (cf. Latin neque), ekue 'also, as well' < *h₂et(i)-kʷe (cf. Lat. atque, Gaulish ate, OIr. aith 'again'), ve "or" (cf. Latin enclitic -ve and Attic Greek ἤ ē < Proto-Greek *ē-we). As in Welsh, there is an s-subjunctive, gabiseti "he shall take" (Old Irish gabid), robiseti, auseti. Compare Umbrian ferest "he/she/it shall make" or Ancient Greek δείξῃ deiksēi (aorist subj.) / δείξει deiksei (future ind.) "(that) he/she/it shall show".

Celtiberian was a Celtic language that shows the characteristic sound changes of Celtic languages such as:

It is possible, however, that, as in other Celtic languages, *p before -l- was voiced to b, if the spelling of the place name 'konbouto (Roman Conplutum) represents /konblouto/.

Final *-m is preserved in Celtiberian (and Lepontic), a further indication of these dialects' conservatism. It is generally fronted to -n in Gaulish (exceptional cases, for instance on the Larzac tablet, are probably due to influence from Latin): boustom "stable."

An -n- stem can be seen in melmu nom.sg. < *-ōn, melmunos gen. sg. (from Botorrita III, probably a name).