Reconstruction:Proto-Celtic/druwits

Etymology
Traditionally taken to be from (from from ) +, the root of , thus meaning ‘oak-knower’ or ‘tree-knower’. Since 1960s the first part is often derived from, thus meaning ‘one with solid knowledge, great sage’. The connection with ‘oak’ is doubtful both on phonological and historical grounds (Pliny the Elder being the only ancient author drawing the connection, and proposing a folk etymology of the Celtic word as borrowed from ). The first element being an intensifying adverbial modifier of the second element also fits better with other similar compounds preserved in Old Irish: <,  < ,  <.

Noun

 * 1) druid