Adelfus \a-del-fus, ad(e)-lfus\ as a boy's name is a variant of Adelphe (Greek), and the meaning of Adelfus is "brother".

The baby name Adelfus sounds like Adulfus, Adelphus and Adelfo. Other similar baby names are Adelgiso, Adelpho, Adolphus, Adolfo, Adolf, Alfeus and Dollfus.