What Is Iambic Pentameter?

If you’ve studied any of Shakespeare’s sonnets you may have heard of ‘iambic pentameter’… but what exactly is iambic pentameter?

Iambic Pentameter Definition

Iambic

In a line of poetry, an ‘iamb’ is a foot or beat consisting of an unstressed syllable followed by a stressed syllable.

Or another way to think of it it a short syllable followed by a long syllable. For example, deLIGHT, the SUN, forLORN, one DAY, reLEASE. English is the perfect language for iambus because of the way the stressed and unstressed syllables work. (Interestingly, the iamb sounds a little like a heartbeat).

Pentameter

‘Penta’ means five, so pentameter simply means five meters. A line of poetry written in iambic pentameter has five feet = five sets of stressed syllables and unstressed syllables.

Putting these two terms together, iambic pentameter is a line of writing that consists of ten syllables in a specific pattern of an unstressed syllable followed by a stressed syllable, or a short syllable followed by a long syllable.

iambic pentameter cartoon
5 iambs/feet of unstressed and stressed syllables – simple!

Iambic Pentameter Examples

Here are three very different examples of iambic pentameter in English poetry:

Shakespeare’s sonnet 18 starts ‘Shall I compare thee to a summer’s day?’. This line of poetry has five feet, so it’s written in pentameter. And the stressing pattern is all iambs (an unstressed syllable followed by a stressed syllable):

Iambic pentameter examples

Shall I   | compARE |  thee TO  |  a SUM  | mers DAY?
da DUM |   da DUM   | da DUM | da DUM | da DUM


From Shakespeare to Taylor Swift, whose #1 dance-pop single Shake It Off includes some iambic pentameter. Who knew?! (And yes, we have just classified Taylor Swift as a poet!)

I’m just gonna shake, shake, shake, shake, sha-ake
da DUM |   da DUM   | da DUM | da DUM | da DUM

And one final (and more traditional) example of iambic pentameter, this time from Robert Browning’s poem My Last Duchess. The poem is written as a dramatic lyric made up of rhymed couplets in iambic pentameter, with each line made up of 5 sets of alternating stressed and unstressed syllables – 10 syllables in all:

That’s my last Duchess painted on the wall,
Looking as if she were alive. I call
That piece a wonder, now: Frà Pandolf’s hands
Worked busily a day, and there she stands…
And seemed as they would ask me, if they durst,
How such a glance came there; so, not the first
Are you to turn and ask thus. Sir, ’twas not
Her husband’s presence only, called that spot…

 

Beginning to understand it now? Check out this short tutorial


Why Do Poets Use Iambic Pentameter?

Iambic pentameter is used frequently, in verse, poetry and even pop songs. This rhythm was popularised by Elizabethan and Jacobean dramatised such as Shakespeare and John Donne, and is still used today by modern authors (read sonnet examples from other poets – some use iambic pentameters and some use other meters).

Iambic pentameter is a basic rhythm that’s pleasing to the ear and closely resembles the rhythm of everyday speech, or a heartbeat.

For playwrights, using iambic pentameter allow them to imitate everyday speech in verse. The rythm gives a less rigid, but natural flow to the text – and the dialogue. Put simply, iambic pentameter is a metrical speech rhythm that is natural to the English language. Shakespeare used iambic pentameter because it closely resembles the rhythm of everyday speech, and he no doubt wanted to imitate everyday speech in his plays.


Why Shakespeare Loved Iambic Pentameter


Common Questions About Iambic Pentameter:

Does iambic pentameter needs to be ten syllables?

Pentameter is simply penta, which means 5, meters. So a line of poetry written in pentameter has 5 feet, or 5 sets of stressed and unstressed syllables

Is ‘to be or not to be’ iambic pentameter?

No. Although there are elements of iambic pentameter throughout Hamlet’s ‘to be or not to be‘ soliloquy there are many lines with more than ten syllables, which by definition means the lines can’t be in iambic pentameter.

How can you identify iambic pentameter?

Iambic pentameter is a line of writing that consists of ten syllables in a specific pattern of an unstressed syllable followed by a stressed syllable, or a short syllable followed by a long syllable. For example ‘Shall I compare thee to a summer’s day?’ from Shakespeare’s sonnet 18.


Any questions on iambic pentameter or how it works? Let us know in the comments section below!

63 thoughts on “What Is Iambic Pentameter?”

  1. Thank you for this tutorial. I am still trying to understand poetry. I loved it when I was at university but I never quite understood the technical aspects of it.

    Reply
  2. How can you be discussing literary devices when you are not able to distinguish “who’s” from “whose”?
    I’ll explain simply: “who’s” is short form for “who is” and does not fit correctly in the sentence about Taylor Swift.

    Reply
      • that was very rude of leslie, but very well behaved and polite of you to answer so kindly Ed, I’m sure god will reward you for this🙂

        Reply
    • You are quite correct in your critique but the information given about iambic pentameter is also correct. I appreciate you both.

      Reply
    • Sorry, Leslie. The use of “whose” you are referring to is used correctly in that Taylor Swift reference in the article. “Whose” is the possessive form of the pronoun “who”. It is correctly used by the author.

      Reply
  3. A short poem of thanks utilizing iambic pentameter:

    I thank you for this great tutorial.
    I cannot stress how much I was in need.
    I’d like to think I am mercurial;
    The words struck home and knowledge was received.

    Reply
  4. I want to know where and why there´s a sound change in that sonnet. And specifically I need this structure of all the sonnet, my professor said that from line 3 it´s not like this: X / X/ It changes

    Reply
    • The fourth line is iambic pentameter but the rhythm of the preceding three lines is lost in the closing line of the quatrain. This is a common occurrence in sonnets (and is sometimes attributed to changes in pronunciation and reading). Oxford himself wrote many such varied endings, and it is not considered a mistake in meter You might try “The heart-beat moved me and I could not fail to bleed.”

      Reply
  5. Really enjoyed this post! Iambic pentameter can seem daunting at first, but your clear examples made it much easier to understand. Thanks for breaking it down so well!

    Reply

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