rằm

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Compare năm.”)

• (Hà Nội) IPA^(key): [zam˨˩]
• (Huế) IPA^(key): [ʐam˦˩]
• (Saigon) IPA^(key): [ɹam˨˩]

rằm • (𠄻, 林, 𦝃, 𬃂, 𪱬)

1. the 15th day of a lunar month, the day of a full moon, on which Vietnamese people traditionally place offerings on their altars and pray for good luck

   trăng rằm ― full moon