Related Clues:

• Speaking several same sounds, say?
• This is what William Wordsworth wrote
• Did Daniel Defoe demonstrate this?
• Something sometimes seen scanning sonnets?
• It's seen in some Shakespeare sonnets
• Poetic device is nothing but repeats
• Initial repetition is only repetition after all
• Peter practised poetic ploy perfectly
• What 17-, 33-, 47- and 66-Across exhibit, despite appearances to the contrary
• A feature of double dosing doing everything with repetition
• Nothing but repetition? Rather regular repetition, perhaps
• Repeated first letters
• Possibly perceived perusing poetry, perhaps?
• Poetic rhyming device using words with the same initial letter
• Initial letters of Shakespeare sonnet, say, supply solution?