Pierian

Every poet knows the pun is Pierian, that it springs from the same soil as the Muse†a matching and shifting of vowels and consonants, an adroit assonance sometimes derided as jackassonance.

—Untermeyer, Louis

A little learning is a dangerous thing; Drink deep, or taste not the Pierian spring: There shallow draughts intoxicate the brain, And drinking largely sobers us again.

—Pope, Alexander