一いっ得とく

noun

one advantage; a merit

Often used in the set phrase 一得一失 (いっとくいっしつ, 'one gain, one loss') or in contexts weighing pros and cons. As a standalone noun it is somewhat formal and less common in casual speech.

• この案あんには一いっ得とく一いっ失しつがある。

  This plan has both an advantage and a disadvantage.

• 彼かれの提てい案あんにも一いっ得とくはあると思おもう。

  I think his proposal also has a merit.