"The Lydian word for 'king' and its origin" is a webinar held by Professor Ignasi-Xavier Adiego Lajara on April 15th, 2026, within the series ALPHA (Anatolian Linguistics, Philology, History and Archaeology), an academic lecture initiative organized within the ERC-funded project CAncAn – Communication in Ancient Anatolia (ERC Grant Agreement No. 101088363). In this lecture, Prof. Adiego Lajara investigates the etymology and linguistic history of the Lydian word for 'king', tracing its connections to related forms in Carian and Greek. Drawing on comparative evidence from Anatolian linguistics, he argues that the Lydian term qaλm(λ)u is cognate with Carian k̂λmu and Greek of Lydia πάλμυς, although the origin of the second λ in qaλmλu- remains unresolved. He proposes that Carian k̂λmu can be etymologically explained as a muwa-compound functioning as a divine epithet, with muwa- carrying the meaning 'to set in motion / to drive / to lead'. The lecture further argues that k̂λmu was originally an imperative Satznamen meaning 'lead the army!', which subsequently underwent lexicalization through the semantic chain 'army-leader' → 'commander'. This meaning is attested in the Iasos inscription, where the expression trquδe k̂λmu δ — meaning 'to Tarhunt, the army-leader' — corresponds to Greek Zeus Stratios, as proposed by Loiacono (2019). The lecture goes on to propose that this Carian term for 'commander' may have acquired the meaning 'king' in Lydian, possibly in a context of Carian dominance, a semantic shift perhaps further reinforced by the identification of Zeus Stratios with Zeus Megistos at Iasos. Finally, the religious context of k̂λmu in the Iasos inscription may also account for the use of πάλμυς for divine referents in the fragments of Hipponax of Ephesus. Prof. Ignasi-Xavier Adiego Lajara is Full Professor of Indo-European Linguistics at the University of Barcelona and Director of the Institute of Ancient Near Eastern Studies. He is widely recognized as one of the leading authorities on ancient Anatolian languages, with a particular focus on Carian, Lydian, Lycian, and Pisidian. He played a decisive role in the decipherment of the Carian alphabet and the identification of Carian as a member of the Anatolian branch of Indo-European. His principal monograph on the subject, The Carian Language (Brill, 2007), remains the standard reference work in the field.