The juxtaposition of two contrasting ideas in a line of poetry is_________?

The word that describes the juxtaposition of two contrasting ideas in a line of poetry is "oxymoron." An oxymoron is a figure of speech in which two opposite or contradictory ideas are combined to create a new meaning. For example, the phrase "jumbo shrimp" combines the words "jumbo," which means large, and "shrimp," which means small, to create a paradoxical or ironic effect. In poetry, oxymorons can be used to create a sense of tension or to highlight the complexity of a situation or emotion. The other options - "euphemism," "synecdoche," and "catharsis" - do not accurately describe this literary technique.