Iambic Pentameter

Iambic pentameter (from Greek: ἰαμβικός πεντάμετρος meaning to have five iambs) is a commonly used metrical line in traditional verse and verse drama. The term describes the particular rhythm that the words establish in that line. That rhythm is measured in small groups of syllables; these small groups of syllables are called "feet". The word "iambic" describes the type of foot that is used (in English, an unstressed syllable followed by a stressed syllable). The word "pentameter" indicates that a line has five of these "feet."

These terms originally applied to the quantitative meter of classical poetry. They were adopted to describe the equivalent meters in English accentual-syllabic verse. Different languages express rhythm in different ways. In Ancient Greek and Latin, the rhythm is created through the alternation of short and long syllables. In English, the rhythm is created through the use of stress, alternating between unstressed and stressed syllables. An English unstressed syllable is equivalent to a classical short syllable, while an English stressed syllable is equivalent to a classical long syllable. When a pair of syllables is arranged as a short followed by a long, or an unstressed followed by a stressed, pattern, that foot is said to be "iambic". The English word "trapeze" is an example of an iambic pair of syllables, since the word is made up of two syllables ("tra—peze") and is pronounced with the stress on the second syllable ("tra—PEZE", rather than "TRA—peze"). Iambic pentameter is a line made up of five such pairs of short/long, or unstressed/stressed, syllables.

Iambic rhythms come relatively naturally in English. Iambic pentameter is the most common meter in English poetry; it is used in many of the major English poetic forms, including blank verse, the heroic couplet, and some of the traditional rhymed stanza forms. William Shakespeare used iambic pentameter in his plays and sonnets.