👉 In literature, a sonnet is a short poem typically four lines in length. It was first used by William Shakespeare to express his own thoughts and emotions at different times of his life, often as part of a play or a monologue. Sonnets are characterized by their use of rhyming couplets and a focus on the speaker's inner thoughts and feelings. The poem is typically written in a style that reflects the mood of the time it was composed, such as melancholic, romantic,