YOU SAID:

That is the best scariest thing

INTO JAPANESE

それは最高の怖いものです。

BACK INTO ENGLISH

It is the best scary stuff.

INTO JAPANESE

それは一番怖いものです。

BACK INTO ENGLISH

It is a very scary thing.

INTO JAPANESE

それは非常に怖いものです。

BACK INTO ENGLISH

It is a very scary thing.