What is the best definition for the word emaciated?

The word "emaciated" is best defined as "wasted," which refers to someone who is abnormally thin or weak, often due to severe malnutrition, illness, or starvation. This term carries a connotation of extreme thinness and physical frailty, making it an accurate descriptor of someone whose body has lost a significant amount of weight and muscle mass.

In contrast, the other options do not align with the meaning of "emaciated." "Vivid" relates to brightness and clarity, "fresh" implies newness or freshness, and "grateful" pertains to an attitude of thankfulness. None of these definitions convey the idea of physical deterioration associated with being emaciated. Therefore, the choice of "wasted" captures the essence of the term, highlighting the severe impact on health and physique.