Choriambus is a rarely used literary term that refers to a metrical foot consisting of four syllables. This metrical foot consists of two stressed syllables, followed by two unstressed syllables. There are several synonyms for the word choriambus, including syncopated spondee and hollow verse. The syncopated spondee is a metrical foot where a long syllable is followed by two short syllables, and it produces a similar rhythm to the choriambus. Hollow verse, on the other hand, is a term used to describe any metrical foot that moves from a stressed syllable to an unstressed syllable. In poetry, writers use different types of feet to produce a unique rhythmic pattern in their works.