Final answer:
The diction in "Upon Julia's Clothes" is formal and elevated, with sophisticated words like "methinks" and "liquefaction" that add a literary tone to the poem.
Step-by-step explanation:
The diction in the lines from "Upon Julia's Clothes" is formal and elevated. Words like "methinks" and "liquefaction" contribute to a sophisticated and literary tone.
"Methinks" is a more archaic form of "it seems to me," adding a touch of formality, while "liquefaction" is a high-register word that transforms the simple act of Julia's movement in her silk clothes into something more poetic and refined, suggesting that her clothes move fluidly and gracefully as if they were liquid.
The word "liquefaction" in particular elevates the diction beyond everyday speech, contrasting the use of simpler words like "silks" and "clothes". This combination of word choices aligns with the guidance that diction can create clarity without being mean, and that using unusual or metaphorical words can raise the style above the commonplace.