unnoble adjective 3verb 1forms 5 adjective3 •Not noble; ignoble; base. •Of a metal, being at the lower end of the electrochemical series, i.e. oxidising readily. •(old-fashioned) Not of noble rank.Yet from the commencement of mining there have been unnoble proprietors of mines, who belonged to the class of merchants. — 1800 verb1 •To make (someone or something) no longer noble formsunnobled · unnobling · unnobles · more unnoble · most unnoble