What languages form the base for Portuguese?

Answer 1

It's traces its origins from the Roman occupation of the Iberian Penninsula. Over several centuries, the Latin of the Roman elite, was mixed with the Celtiberian languages already spoken, forming particular Vulgar dialects of Latin. Presumably, this Celtic or Gallic origin is the root of the word "Portu-gal". Other placenames in both Portugal and Spain still carry Celtic names. With the collapse of the Roman Empire and the establisment of the Suevi kingdom and Visigothic kingdoms, these new dialects became further removed from mainstream Latin.

The coming of the Moors helped to isolate the languages further from the continent but also provided a substantial influx of Arabic vocabulary. Most interestingly

Almofada-al-mikhadda (Pillow)

Oxala-Inshallah (God be with you)

Arroz- razza/roz (Rice)

So, its base is Ibero-celtic/Latin, with a strong influence of Arabic.

Answer 2

The base for Portuguese comes from Latin, the language of the ancient Romans. Portuguese also has influences from other languages such as Arabic, Germanic languages, and indigenous languages of the Iberian Peninsula.