Definition of tack on

The origin of the phrase "tack on" dates back to the 16th century, when the word "tack" represented a small metal pin or nail used to fix sails or other materials on ships. At the time, the verb "to tack" implied changing the direction of a ship by zigzagging. Over time, the expression "to tack on" emerged, denoting the act of adding something as an extra or additional item. Initially, this phrase was associated with attaching small pieces to a larger object with the use of tacks. However, with the evolution of language, it came to refer to any supplementary appendage or additional part that is appended to an existing one. In modern usage, the phrase "to tack on" is commonly employed to indicate adding something at the end of a document, statement, or activity, or to extend something's duration. It is also frequently utilized in business and administrative contexts to describe the process of adding an additional fee, tax, or charge to the original cost of a product or service, which results in an inflated price. Therefore, the origin of the word "tack on" can be traced back to the nautical terminology of the 16th century, which has evolved over time to convey a distinct meaning in modern usage.