A person or thing that is the direct opposite of someone or something else. Her behavior was the antithesis of what was expected from a leader.
A contrast or opposition between two things. The antithesis between the two characters was evident in their actions and beliefs.
A rhetorical device in which two opposite ideas are put together in a sentence to achieve a contrasting effect. The speech was full of antithesis, highlighting the differences between freedom and oppression.
In philosophy, the negation or contradiction of a thesis; the second stage in a dialectical argument. In Hegelian dialectic, every thesis is challenged by its antithesis, leading to a synthesis.