Where does “Arbaa” come from?

Arbaa (Malay) comes from Arabic الأربعاء, from Classical Syriac ܐܪܒܥܒܫܒܐ, from Classical Syriac ܐܪܒܥܐ, from Aramaic ארבעא, from Proto-Semitic ʔarbaʕ- — four.

Ancestry of “Arbaa”, step by step

Arbaa traces back through two separate lines of ancestry.

via Arabic الأربعاء

StepLanguageWordMeaning
1ArabicالأربعاءWednesday
2Classical SyriacܐܪܒܥܒܫܒܐWednesday
3Classical Syriacܐܪܒܥܐfour, fourth
4Aramaicארבעאfour (4)
5Proto-Semiticʔarbaʕ-four

via Arabic الْأَرْبِعَاء

StepLanguageWordMeaning
1Arabicالْأَرْبِعَاء—
Every word from Proto-Semitic ʔarbaʕ- →Every word from Aramaic ארבעא →Every word from Classical Syriac ܐܪܒܥܐ →