YOU SAID:

my friend is bad my sister is worse and my father is worst

INTO JAPANESE

私の友人は悪いです私の妹は悪いです、私の父は最悪です

BACK INTO ENGLISH

My friend is bad my sister is bad, my father is the worst

INTO JAPANESE

私の友人は悪いです私の妹は悪いです、私の父は最悪です

BACK INTO ENGLISH

My friend is bad my sister is bad, my father is the worst