This is the 4403rd most frequent Russian word.
весьма
"Very" or "quite".
Used to emphasize the degree of the adjective 'интересен' (interesting).
Этот фильм весьма интересен.
This movie is very interesting.
Used to intensify the quality 'одарённая' (talented), often suggesting admiration.
Она весьма одарённая пианистка.
She is a very talented pianist.
Used to express a high extent of the action 'улучшил' (improved).