What is the origin of venal?
The English adjective venal comes from Latin vēnālis “for sale, for hire, susceptible to or obtainable by bribery,” a derivative of vēnus “sale.” Vēnus comes from an unattested noun wesno-, a Latin derivation of wes– (a variant of the Proto-Indo-European root wes-, wos– “to buy, sell”) and the noun suffix –no. Wes– also appears in Hittite washti “thou buyest.” From the variant wos-, Greek (Attic) has the noun ōnḗ “purchase, purchase price” (Homeric Greek has ônos, Aeolic ónna), all from an unrecorded wosnā. Sanskrit vasná “purchase price, wage” may come from either wes– or wos-. Venal entered English in the 17th century.