Fidel \f(i)-del\ as a boy's name is pronounced fee-DEL. It is of Latin origin, and the meaning of Fidel is "faithful". The Puritans named boys Faithful, but Fidel is the modern form. Fidel Castro, the revolutionary who became president-for-life of Cuba.
Fidel has 12 variant forms: Fadelio, Fedele, Fidele, Fedelio, Fidal, Fidalio, Fidelio, Fidelis, Fidelix, Fidello, Fidelo and Fido.