01720--choriamb or choriambus

Choriamb or Choriambus is a metrical unit combining one trochee  and one iamb into a single foot of four syllables, with two stressed syllables enclosing two unstressed syllables, as in the word hullabaloo. It was used frequently in Greek dramatic choruses and lyrics, and by the Roman poet Horace, and later in some German verse.