Unrhymed iambic pentameter lines illustrate blank verse. Blank verse is a type of poetry that consists of unrhymed lines of iambic pentameter. This means that each line has ten syllables with a pattern of an unstressed syllable followed by a stressed syllable (iambic). Blank verse is often used in Shakespeare's plays and is sometimes referred to as "Shakespearean verse." It is commonly used in dramatic and epic poetry and provides a natural and rhythmic flow to the language without the constraints of rhyme.