'bardic' originates from English, formed by adding the adjective suffix '-ic' to 'bard'; 'bard' originates from Old Irish, specifically the word 'bard', where Proto-Celtic '*bardos' meant 'poet'.

'bard' changed from Old Irish word 'bard' and passed into Middle English as 'bard', and eventually the adjective 'bardic' developed in English by the addition of the suffix '-ic'.

Initially, it meant 'poet' (via the noun 'bard'), but over time it evolved into its current meaning of 'of or relating to bards; poetic or epic in style'.