1. Assonance: Assonance is the repeating of the same vowel sound inside a single line. The poem’s line “Her wits to your, forsooth, and manufactured excuses” employs assonance. The sound /o/ is repeated in this line, whereas /o/ and /i/ are repeated in the phrase that follows, “Of mine for dowry will be banned.”
2. Consonance: Consonance is the repeating of the same consonant sound inside a single line. Together down, sir. is where the poem’s /t/ sound is repeated. But take notice of Neptune. The repeat of the /n/ sound in the line “The Count your master’s known munificence” similarly uses consonance.
3. Simile: The explicit comparison between two things using the words “like” or “as” is called a simile. In the poem, the simile is used in the following line: “That’s my last duchess painted on the wall, Looking as if she were alive.” In this line, the poet compares a dead person to her painting by using the word “as”.

My Last Duchess Summary