YOU SAID:
Americans are very dumb
INTO JAPANESE
アメリカ人は非常に間抜けです
BACK INTO ENGLISH
Americans are so dumb
INTO JAPANESE
アメリカ人は愚かです。
BACK INTO ENGLISH
Americans are stupid.
INTO JAPANESE
アメリカ人は愚かされます。
BACK INTO ENGLISH
Americans are stupid.
You've done this before, haven't you.