Vietnamese lâu

← Proto-Mon-Khmer *ləwʔ (inherited)

← Mon လံ (cognate)

← Muong lô (cognate)

→ Semai liiw (cognate)

→ Vietnamese sau (mention)

→ Vietnamese lâu la (mention)

→ Vietnamese chẳng bao lâu (compound)

→ Vietnamese lâu đời (compound)

→ Vietnamese lâu dài (compound)