An alliterative pattern where three consecutive words or stressed syllables begin with three different consonant sounds in alphabetical or sequential order. This creates a progressive sound pattern that moves through the alphabet, adding variety and playfulness to the sonic texture of the poem. Unlike traditional alliteration that repeats a single sound, ABC alliteration creates forward motion through changing initial consonants, often used for humorous or deliberately artificial effects in light verse.

ABC alliteration is a rare form where successive words or lines begin with consecutive letters of the alphabet while also employing alliteration; more conceptual than common, it blends acrostic and sound-play techniques.