YOU SAID:

i was a fool i swam in a pool

INTO JAPANESE

私はプールで泳いだばかだ

BACK INTO ENGLISH

I am a fool to swim in the pool

INTO JAPANESE

私はプールで泳ぐのは馬鹿だ

BACK INTO ENGLISH

It is foolish to swim in the pool.

INTO JAPANESE

プールで泳ぐのは愚かです。

BACK INTO ENGLISH

It is silly to swim in the pool.

INTO JAPANESE

プールで泳ぐのはばかげている。

BACK INTO ENGLISH

It is absurd to swim in the pool.

INTO JAPANESE

プールで泳ぐのは不合理です。

BACK INTO ENGLISH

It is unreasonable to swim in the pool.

INTO JAPANESE

プールで泳ぐのは無理です。

BACK INTO ENGLISH

It is impossible to swim in the pool.

INTO JAPANESE

プールで泳ぐことは不可能です。

BACK INTO ENGLISH

It is impossible to swim in the pool.