The Arafundi languages are a small family of clearly related languages, namely Andai (Meakambut), Nanubae, and Tapei. Alfendio is an old synonym for Arafundi, from when it was still considered a single language.
Laycock (1973) grouped the Arafundi languages with the Ramu languages, although (according to his comments in the introduction) this grouping was apparently impressionistic and not based on either reconstructive work or lexicostatistics. Ross (2005) retains Laycock's grouping without comment. However, Foley (2005) does not include Arafundi within Ramu, and Ethnologue (2009) shows them as an independent family. Foley has suggested instead that the Arafundi and Piawi languages may be related (Comrie 1992).