Early Quenya
tampo
noun. well
ausi-
prefix. well
mande
adverb. well
vande
adverb. well
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A noun in the Qenya Lexicon of the 1910s given as ᴱQ. tampo “a well”, derived from the root ᴱ√TṂPṂ “build”; Tolkien considered transferring the word to ᴱ√TAPA “✱stretch” (QL/93). This word also appeared in the Poetic and Mythological Words of Eldarissa (PME/93).
Neo-Quenya: I think ᴺQ. tampo “well” might be salvaged in Neo-Quenya as a derivative of √TAM “construct”; it is used this way in Helge Fauskanger’s NQNT (NQNT).