YOU SAID:
I have a fear of arachnophobia.
INTO JAPANESE
私はクモ恐怖症が怖いです。
BACK INTO ENGLISH
I have arachnophobia.
INTO JAPANESE
私はクモ恐怖症です。
BACK INTO ENGLISH
I'm arachnophobic.
INTO JAPANESE
私はクモ恐怖症です。
BACK INTO ENGLISH
I'm arachnophobic.
That didn't even make that much sense in English.