Vaidaras

The meaning of this name as a whole is uncertain, as both of its two elements are uncertain, due to there being several possibilities for their etymology.

The first element is either vai-, vaid- or vait-. In the case of the first one, that means that the element is either derived from the old Lithuanian verb vajoti meaning "to chase, to pursue" or from the old Lithuanian noun vajys meaning "messenger, courier". But if the element is actually vaid-, then it is derived from the old Lithuanian verb vaidyti meaning "to visit, to appear", which is related to the modern Lithuanian verb vaidentis meaning "to haunt" as well as "to appear, to see". Also compare modern Lithuanian vaiduoklis meaning "ghost, apparition" and vaidytis meaning "to quarrel, to wrangle". And finally, if the first element is vait-, then it is derived from the old Lithuanian verb vaitenti meaning "to discuss" as well as "to decide, to judge" and "to solve, to resolve".

The second element of this name is either ar- or dar-. In the case of the former, that means that the element is derived from Lithuanian ar meaning "also, too, as well (as)". But in the case of the latter, the element is derived from Lithuanian daryti meaning "to do, to act" as well as "to work".