The term 'fanatics' is used to describe people who are extremely passionate and devoted to a particular cause or activity. The four crossword solutions for this term are 'NUTS' (4 letters), 'ultras' (6 letters), 'MANIACS' (7 letters), and 'ZEALOTS' (7 letters). All of these words refer to people who are highly enthusiastic and committed to something, often to the point of obsession. NUTS are people who are considered to be crazy or irrational in their devotion, while ultras are those who are particularly passionate and vocal about their beliefs. MANIACS are those who are driven by an intense and often uncontrollable enthusiasm, and ZEALOTS are those who are fanatically devoted to a cause or idea.