Fetching details from the dictionary...
sophistry; sophism
彼の主張は巧みな詭弁にすぎない。
His argument is nothing but clever sophistry.
詭弁を弄して責任を逃れようとした。
He tried to evade responsibility by resorting to sophistry.
論理的に見えるが実は詭弁だと気づいた。
I realized it looked logical but was actually sophistry.