"Sobered up" refers to the state of becoming sober or regaining sobriety after being under the influence of drugs or alcohol. There are several synonyms for this term that can be used depending on the context. Common synonyms include "clear-headed," "lucid," "alert," "conscious," "restrained," and "temperate." Each of these words implies a state of mental clarity and a lack of the impairment that comes with intoxication. Using synonyms for "sobered up" in your writing can help you avoid repetition and create more vivid descriptions of a person's state of mind as they become sober.