得手 is read as えて (ete) and means forte.
えて
ete
えてふえて
strong and weak points
えてかって
self-willed
ふえて
weak point
せっとくじょうず
persuasiveness
てどく
gain of tempo (shogi, othello)
とくい
one's strong point
とく
rebirth in paradise, entering nirvana
うる
to be able to ...
とくてん
scoring
える
to be able to ..., can ...
とくする
to make a profit
とくいさき
(regular) customer