Iambic Pentameter
Quick answer: Iambic pentameter is a ten syllable line of five iambs, da-DUM five times, the meter of Shakespeare and the sonnet. Learn how to hear and write it.
Iambic pentameter is a line of verse made of five iambs: five pairs of syllables, each running unstressed then stressed, da-DUM da-DUM da-DUM da-DUM da-DUM, ten syllables in all. It is the most important meter in English poetry by any measure, the line of Shakespeare's plays, the English sonnet, Milton's 'Paradise Lost', Wordsworth's 'The Prelude' and centuries of verse between and since.
Why five feet? Partly breath: a pentameter fits comfortably in one spoken exhalation. Partly asymmetry: unlike four beat lines, which snap into singsong halves, five beats resist splitting evenly, so the line stays flexible and speech-like. Whatever the cause, English poets discovered that the pentameter can hold argument, narrative and feeling for thousands of lines without wearying the ear, and no other line length has matched that stamina.
How It Works
Here is a demonstration line, written for this page: the RAIN | reMEMbers | EVery ROOF | it TOUCHED, and here is a stricter one: we CARried | WHAT we COULD | and LEFT | the REST. Do not worry that neither scans with perfect regularity; real pentameter never does. The five beat frame is a contract, and the poetry lives in the small licensed departures from it.
The standard variations are worth knowing by name: a trochaic first foot for an arresting start, a feminine ending that adds an eleventh light syllable, a mid-line pause called a caesura, and the pyrrhic-spondee wave that lets emphasis arrive late and doubled. Unrhymed iambic pentameter is called blank verse; rhymed pairs of pentameters are heroic couplets.
Where You Will See It
Chaucer naturalised the line in 'The Canterbury Tales'. Marlowe and Shakespeare made blank verse the language of English drama, Milton made it epic, Pope perfected the heroic couplet, and Wordsworth turned the pentameter inward for autobiography. The English sonnet is a fourteen line pentameter machine. Even twentieth century free verse pioneers wrote from inside it: Eliot and Stevens bend the pentameter more often than they abandon it, and contemporary poets still reach for it whenever they want gravity without costume.
How to Write It Well
Start by counting beats, not syllables: five clear stresses per line, spoken naturally. Let sentence rhythm argue with the meter rather than surrendering to it, and vary your pauses so consecutive lines break in different places. A useful drill is translating your own free verse into pentameter and back, noticing what each version gains. Metrical control of this kind is exactly what contest criteria mean by structure, and a clean pentameter poem stands out in any judging pile, Writory's monthly one included.
What poets can take from this
- Count five natural stresses per line rather than mechanically counting ten syllables.
- Allow standard variations, especially trochaic openings, or the verse will sound wooden.
- Move your caesura around; identical mid-line pauses are what make pentameter monotonous.
- Put the line's most important word on the fourth or fifth stress where weight accumulates.
- Read a Shakespeare speech aloud daily for a fortnight; the meter will move into your ear.
Try it yourself
Write fourteen lines of blank verse in which a speaker explains a decision they regret, keeping five beats per line and breaking the meter once, deliberately, at the moment of regret.
Questions
Does iambic pentameter always have exactly ten syllables?
No. Ten is the base, but feminine endings add an eleventh light syllable, and licensed substitutions can nudge the count. The steadier measure is five stressed beats per line.
What is the difference between blank verse and iambic pentameter?
Iambic pentameter is the line itself. Blank verse is unrhymed iambic pentameter, the form of Shakespeare's plays and Milton's epics. All blank verse is iambic pentameter, but pentameter can also rhyme, as in sonnets and heroic couplets.
Why is iambic pentameter so dominant in English?
It matches the natural rise of English speech, fits a comfortable breath, and its odd number of beats resists collapsing into singsong halves. Five centuries of masterpieces then gave it unmatched prestige and familiarity.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
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