sông Hồng

Etymology
🇰🇲, . The Sinicized was also calqued from the same source.

The native/colloquial name of the river was, literally "great/big river"; this word was transliterated by the French as  and. The literary name(s) of the river was  (textual evidence) and ; both the readings  and  for the first character were in use, although nhị seems to be more common.

Since was adopted late (during the colonial period), it is not clear if it ever sufficiently replaced  and  as the administrative tên chữ. Some of the earlier works attesting the spread of sông Hồng (Hà/Giang) as the vernacular name of the river including Nam Hải dị nhân liệt truyện (1909) and Việt Nam sử lược (1920). With the spread of sông Hồng, both the native tên Nôm and the administrative-literary tên chữ / were rendered obsolete.