YOU SAID:
physics is undoubtedly the worst subject
INTO JAPANESE
物理は間違いなく最悪の科目だ
BACK INTO ENGLISH
Physics is definitely the worst subject
INTO JAPANESE
物理は間違いなく一番苦手な科目だ
BACK INTO ENGLISH
Physics is definitely my weakest subject.
INTO JAPANESE
物理は間違いなく私の最も苦手な科目です。
BACK INTO ENGLISH
Physics is definitely my weakest subject.
Well done, yes, well done!