Select the most appropriate one-word substitution for the given group of words.

Starting of adjacent words with the same letter

Alliteration

The most appropriate one-word substitution for "starting of adjacent words with the same letter" is alliteration.

• Alliteration is the repetition of initial consonant sounds in two or more neighboring words or syllables.
• Simile is a figure of speech that compares two things using the words "like" or "as."
• Postscript is a brief additional remark at the end of a letter, after the signature.
• Incantation is the chanting of magic spells.