Where does “Brunei” come from?

Brunei (Cornish) comes from English Brunei, from Malay Brunei, from Sanskrit वरुण, from Proto-Indo-Aryan Hwárunas, from Proto-Indo-Iranian Hwárunas, from Proto-Indo-European h₁wér-u-nos, from Proto-Indo-European h₁wer- — broad.

Ancestry of “Brunei”, step by step

StepLanguageWordMeaning
1EnglishBrunei—
2MalayBrunei—
3Sanskritवरुणocean; water; sun
4Proto-Indo-AryanHwárunas—
5Proto-Indo-IranianHwárunas—
6Proto-Indo-Europeanh₁wér-u-nos—
7Proto-Indo-Europeanh₁wer-broad
Every word from Proto-Indo-European h₁wer- →Every word from Proto-Indo-European h₁wér-u-nos →Every word from Proto-Indo-Iranian Hwárunas →