What technique juxtaposes words or phrases with opposite meanings?

The technique that juxtaposes words or phrases with opposite meanings is known as antithesis. This rhetorical device is used to create a contrast between two opposing ideas, highlighting the differences and often enhancing the overall meaning or impact of a statement. For example, in the phrase "It was the best of times, it was the worst of times," the conflicting descriptors emphasize the complexities of the situation.

Antithesis serves to clarify and emphasize key points in persuasive writing or speech, making it a powerful tool for communication. It effectively draws the audience's attention to the contrasting elements, allowing them to grasp deeper meanings in the text.

The other options do not accurately describe this technique. Synthesis refers to combining elements to form a coherent whole, allusion involves referencing another work or figure, and fallacy of inconsistency addresses logical flaws in arguments, but none of these focus specifically on the juxtaposition of opposite meanings.