Amphimacer quatrain is a four-line stanza in which the lines are composed using amphimacer or cretic meter. Each line follows the stressed-unstressed-stressed pattern characteristic of the amphimacer foot, though the number of feet per line may vary. This stanza form is extremely rare in English poetry due to the difficulty of maintaining cretic meter across multiple lines while preserving natural language flow. When employed, the amphimacer quatrain creates a highly structured, formal effect with pronounced symmetry. The consistent use of the rising-falling-rising pattern throughout all four lines produces a distinctive, ceremonial quality.

An Amphimacer quatrain is a four-line stanza built on amphimacer meter; its symmetry and rhythmic intensity lend it to ritualistic or formal poetic contexts.