A semicolon (;) is primarily used in the following ways:
- To join two closely related independent clauses (complete sentences) without using a conjunction like "and" or "but." The connection between the clauses should be clear. Example: "I have a big presentation tomorrow; I need to prepare my notes tonight." This usage shows a stronger connection than a period but less than a comma with a conjunction.
- To separate items in a complex list where the items themselves contain commas, helping to avoid confusion. For example: "I need the weather statistics for London, England; London, Ontario; Paris, France; and Paris, Ontario."
- To precede common conjunctive adverbs like "however," "moreover," and "nevertheless" when they link two independent clauses.
The semicolon provides a stronger pause than a comma but a softer transition than a full stop (period), conveying a closer relationship between the linked clauses than just two separate sentences would. It is different from a colon, which introduces lists, explanations, or amplifications, and from a dash, which serves other stylistic or interruptive purposes. In summary, use a semicolon:
- To link two related independent clauses without a conjunction.
- To separate complex list items that contain internal punctuation.
Example: "My favorite meal is rigatoni with bolognese sauce and crusty bread; these foods remind me of my grandmother’s cooking." This usage enhances sentence flow and clarity by showing a nuanced relationship between the ideas.