A sonnet is a form of poetry that consists of 14 lines written in iambic (Unstressed (U) Stressed (/)) pentameter (ten syllables). This type of poem often comes in the form of Shakespearean, Petrarchan, Spenserian, or Miltonic. The concise and restricted form of the sonnet facilitates the expression of poignant emotions and the elaboration of a single idea or thought.