ᴹ√MBAKH root. “exchange”
This root was the basis for words having to do with trade. It first appeared as unglossed ᴱ√VAKA in the Qenya Lexicon of the 1910s, with derivatives like ᴱQ. vakse “sale” and ᴱQ. vaktele “trade” (QL/99). It also had derivatives in the contemporaneous Gnomish Lexicon like G. bag- “sell, trade” (GL/21); a similar set of derivatives appeared in Early Noldorin word lists of the 1920s (PE13/138). The root appeared as ᴹ√MBAKH “exchange” in The Etymologies of the 1930s with derivatives like ᴹQ. manka-/N. banga- “trade”, N. bachor “pedlar”, and ᴹQ. makar “tradesman” (Ety/MBAKH). An earlier version of this entry instead had ᴹ√MBAƷ, but this was deleted (EtyAC/MBAƷ, MBAKH). The word ᴹQ. makar as well as a deleted variants māka- of ᴹQ. manka- and bagor of N. bachor (EtyAC/MBAKH) imply Tolkien also considered a variant form ᴹ√MBAK.
References ✧ Ety/MBAKH; EtyAC/MBAƷ, MBAKH
ᴱ√VAKA root. “*trade”
Reference ✧ QL/99