"Full up" is a phrase commonly used to describe the feeling of being physically or emotionally satisfied. You may feel full up after a hearty meal or a satisfying conversation with a loved one. There are many synonyms that can convey the same feeling, such as "satisfied," "content," "fulfilled," "pleased," and "satiated." Other alternatives include "gratified," "happy," "satiated," "stuffed," and "sufficed." These words can be used in a variety of contexts, depending on the situation and the intended meaning. Regardless of the synonym chosen, each can convey the same sense of contentment and happiness that being full up can bring.