The term 'full of joy' can be described in many ways. GLEEFUL (7 letters) is a word that means to be filled with joy and happiness. GLADSOME (8 letters) is another word that expresses joy and delight. ECSTATIC (8 letters) is an even stronger word for joy, meaning to be overwhelmed with emotion. SOAPY (5 letters) is a less common word for joy, but it still conveys the same feeling. All of these words describe a person who is full of joy.