The term 'Holier Than Who?' is a phrase that is often used to describe someone who believes they are more righteous than others. The crossword solutions for this term are THOU, which is an archaic English pronoun meaning 'YOU'. This pronoun is often used in religious contexts, such as in the Bible, and is also used to refer to God. Thus, the phrase 'Holier Than Who?' can be interpreted as asking who is more righteous than God.