A more thorough explanation:

Definition: Sober is an adjective that can be used to describe a person who is not under the influence of drugs or alcohol. It can also describe a person who is regularly abstinent or moderate in the use of intoxicating liquors. Additionally, it can describe a situation or person that is serious or grave. When used to describe facts or arguments, it means that they are basic and unexaggerated. Finally, when used to describe a person, it means that they are rational and have self-control.

• After the party, John made sure to wait a few hours before driving home so that he was sober.
• Even though she enjoys a glass of wine with dinner, Sarah is sober most of the time.
• The situation in the hospital was sober as the doctors worked to save the patient's life.
• The journalist presented a sober analysis of the political situation, sticking to the basic facts and avoiding exaggeration.
• Despite the chaos around her, Maria remained sober and made rational decisions.

These examples illustrate the different ways in which the word "sober" can be used. In the first two examples, "sober" is used to describe a person who is not under the influence of drugs or alcohol. In the third example, it is used to describe a serious situation. In the fourth example, it is used to describe facts or arguments that are basic and unexaggerated. Finally, in the fifth example, it is used to describe a person who is rational and has self-control.