Something essential is something that is necessary or required for a certain purpose. The term 'something essential' can be used to describe a variety of things, from basic necessities such as food and water to more complex items like technology and education. The crossword solution for the term 'something essential' is NEED, which is a four-letter word. NEED is defined as a requirement or necessity for something, and it is often used to refer to a lack of something that is necessary for survival or success.