Where does “Guadiana” come from?

Guadiana (Spanish) comes from Old Spanish Aguadiana, from Latin Anas, from Latin ānus, from Kabuverdianu anos, from Portuguese nós, from Old Portuguese enos, from Old Portuguese os, from Vulgar Latin *lōs — that.

Ancestry of “Guadiana”, step by step

StepLanguageWordMeaning
1Old SpanishAguadiana
2LatinAnasduck
3Latinānusa ring
4Kabuverdianuanoswe, first person plural
5Portuguesenóswe; us; "first-person plural objective personal...
6Old Portugueseenos
7Old Portugueseosthe
8Vulgar Latin*lōs
9Latinillōs
10Latinillethat; those; "; demonstrative pronoun "; that...
11LatinolleArchaic form of ille
12Proto-Italic*olnosthat

Words derived from “Guadiana

Every word from Proto-Italic *olnosEvery word from Latin olleEvery word from Latin ille