MONOMANIC

characterized by an inordinate or obsessive zeal for or interest in a single thing, idea, subject or the like. —SHSBC Binder 23 Approved Glossary

characterized by an inordinate or obsessive zeal for or interest in a single thing, idea, subject or the like.having an inordinate or obsessive zeal for or interest in a single thing, idea, subject or the like.one who suffers from an obsession with one idea or interest.