noun
Used in philosophical, logical, or rhetorical contexts to mean a proposition that opposes a given thesis. Also used more broadly for a direct opposite or contrast.
from German Antithese
ヘーゲル弁証法では、テーゼとアンチテーゼからジンテーゼが生まれる。
In Hegelian dialectics, a synthesis arises from a thesis and an antithesis.
彼の意
His opinion was the antithesis of my idea.