ῥαψῳδικός

ή, όν, Adv.
A. of or for a rhapsodist: ἡ ‐κή (with and without τέχνη) the rhapsodist's art, Pl. Ion 538b, 540a, al. Adv. ‐κῶς Eust. 3.55.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project