Fallen \f(al)-len\ as a girl's name is a variant of Fallon (Irish, Gaelic), and the meaning of Fallen is "superiority; descended from a ruler".

The baby name Fallen sounds like Fallyn and Fallan. Other similar baby names are Callen, Caylen, Calen, Cailen, Callan, Kallan, Ellen, Faeleen, Farren, Faren, Gaylen, Galen, Hellen, Kaleen, Kaylen, Kalen, Kellen, Caleen, Taleen, Valen, Valley and Vallee.