Ambulas (or Abelam, Abulas) is a member of the Ndu languages of Sepik River region of northern Papua New Guinea. Dialects are Maprik, Wingei, Wosera-Kamu, Wosera-Mamu.
Most words in Ambulas are roots, although some word-stems are reduplicated, compounded, or derived.
In Ambulas, compound stems occur within nouns (including temporal nouns and quantifiers) and verbs.
Adjective stems can be formed by adding suffixes, such as -mama (meaning "possessing much"), to noun roots or noun stems.