An adjective translated “black” (SD/247). It appears in its plural form dulgî “black” in the final version of the Lament of Akallabêth (SD/247) and in its singular form dulgu in the second draft of this text (SD/312). It may be related to S. dûr “dark” and N. doll “obscure, hidden, dusky”, as suggested by Carl Hostetter and Patrick Wynn (AAD/14). It is likely related to or a variant of dolgu “black, dark”.