Definition of Pentameter
Pentameter is a literary tool that may be defined as a line in verse or poetry that has five sturdy metrical feet or beats. There are different sorts of pentameter: iamb, trochaic, dactylic, and anapestic. The most normally used pentameter in English is iambic. It also can be described as a line that includes ten syllables, where the first syllable is pressured, the second one is unstressed, the 1/3 is careworn, and so on till it reaches the 10th line syllable. For instance:

“Shall I comPARE thee TO a SUMmer’s DAY?”

(Sonnet 18, through William Shakespeare)

Types of Pentameter
Iamb pentameter
Trochaic pentameter
Anapestic pentameter
Dactylic pentameter
Examples of Pentameter in Literature
Example #1: Twelfth Night (By William Shakespeare)
“If music be the food of love, play on;
Give me extra of it, that, surfeiting,
The appetite can also sicken, and so die.
That strain again! It had a dying fall:
O, it got here o’er my ear just like the sweet sound…”

This excerpt has an iambic pentameter fashion (unstressed/stressed pattern), the pressured syllables proven in bold. Here we are able to see that each line has five beats, and stress is positioned on the second syllable.

Example #2: Canterbury Tales (By Geoffrey Chaucer)
“Whan that aprill along with his shoures soote
The droghte of march hath perced to the roote,
And bathed each veyne in swich licour
Of which vertu engendred is the flour;
Whan zephirus eek together with his sweete breeth.
To ferne halwes, kowthe in sondry londes;
Of Engelond, to Caunterbury they wende,
The hooly blisful martir for to seke
That hem hath holpen, whan that they have been seeke.”

This is another example of iambic pentameter. Here, every foot is known as an “iamb,” and consists of two syllables, in which the primary syllable is unaccented and the second is accented. Through this unstressed/burdened pattern, emphasis has been added to the phrases.

Example #3: Holy Sonnet XIV (By John Donne)
“Batter my heart three-personed God, for you
as yet but knock, breathe, shine and seek to mend.
That I may additionally upward push and stand o’erthrow me and bend
Your force to break, blow, burn and make me new…”

Iambic pentameter examples are rich in Donne’s poems. Here, in this extract, the second one and 0.33 strains comply with this pattern flawlessly. There are ten syllables, where the primary syllables are unstressed followed by means of confused syllables.

Example #4: King Lear (By William Shakespeare)
“And my poor fool is hang’d! No, no, no life!
Why should a dog, a horse, a rat, have life,
And thou no breath at all? Thou’lt come no more,
Never, never, never, never, never!
Pray you, undo this button: thank you, sir.
Do you see this? Look on her, look, her lips,
Look there, appearance there…!

This excerpt is a great example of trochaic pentameter, which follows a careworn/unstressed pattern that is opposite to iamb meter. The syllables are flawlessly alternating between unstressed and confused syllables inside the fourth line.

Example #5: The Charge of the Light Brigade (By Alfred, Lord Tennyson)
“Half a league, half a league,
Half a league onward,
All inside the valley of Death
Rode the six hundred.
‘Forward, the Light Brigade!
Charge for the guns!’ he said:
Into the valley of Death
Rode the six hundred.”

This is an instance of dactyl pentameter, which follows a pressured/unstressed/unstressed sample. It is an elegiac poem, given that dactyl pentameter exists in general in elegies. This meter is functioning as a constructing block, and offers a ordinary rhythm to the poem.

Function of Pentameter
Pentameter extensively governs the person lines in poems, couplets, and verses, and gives a structural shape to a poem. It also determines the speaking fashion and rhythm. Pentameters also provide association to words via the regular use of accents at the syllables, and enables in emphasizing the particular phrases which a poet wishes to. This is the major cause for variation in the text through confused/unstressed patterns.
Pedantic Periphrasis