The word "need" refers to a requirement or necessity for something essential for survival, well-being, or fulfillment. It can also denote a strong desire or obligation to have or do something. In simpler terms, when you need something, it means that you cannot do without it or that it is very important to you.
The word "need" comes from the Old English "neod," which meant "force, power, or necessity." It has Germanic roots, and related words exist in other languages, such as Old Norse "naĆ°r," meaning "to bind" or "to force."