Final answer:
A foot is a complete unit of stressed and unstressed syllables in a bound verse metrical pattern. The most common feet in poetry include the iamb, trochee, anapest, and dactyl.
Step-by-step explanation:
The first building blocks of a bound verse metrical pattern are called feet. A foot is a complete unit of stressed and unstressed syllables, typically consisting of one stressed syllable and one or two unstressed syllables. The most common feet in poetry include the iamb (x /), trochee (/ x), anapest (x x /), and dactyl (/ x x). For example, in the word 'unimpressed,' the metrical pattern is an anapest followed by a trochee (x x / / x).