The term 'completely committed' can be described by three crossword solutions: DEVOTED (7 letters), indeep (6 letters), and hellbent (8 letters). DEVOTED means to be dedicated or loyal to a person, cause, or activity. Indeep implies a deep level of commitment, while hellbent suggests an extreme level of dedication and determination. Together, these three words describe someone who is completely committed to something, with no reservations.