YOU SAID:

Ah dear, boredom will certainly be the death of me.

INTO JAPANESE

ああ、退屈は確かに私の死になるでしょう。

BACK INTO ENGLISH

Oh, boredom will surely be my death.

INTO JAPANESE

ああ、退屈はきっと私の死になるでしょう。

BACK INTO ENGLISH

Oh, boredom will surely be my death.