Anapestic tetrameter is a poetic meter that has four anapestic metrical feet per line. Each foot has two unstressed syllables followed by a stressed syllable. It is sometimes referred to as a "reverse dactyl," and shares the rapid, driving pace of the dactyl.
Anapestic tetrameter is a rhythm for comic verse, and prominent examples include Clement Clarke Moore's 'Twas the...