From Longman Dictionary of Contemporary Englishennobleen‧no‧ble /ɪˈnəʊbəl $ ɪˈnoʊ-/ verb [transitive] formal 1 IMPROVEto improve your character art which ennobles the human race2 PGOto make someone a member of the nobility (=the people in society who have a high rank, such as princes etc) —ennoblement noun [uncountable] —ennobling adjective→ See Verb table
Examples from the Corpus
ennoble• Lords of Appeal in Ordinary - Law Lords - receive life baronies on appointment unless they are already ennobled.• There was something ennobling about it.• He ennobled everything he touched with his brush or his pencil.• The Smiths are a synopsis of pain, a resolution - awkwardness and alienation ennobled, given poise.• The Foley family were ennobled in 1711-12.• In any case, in the movie Tolins and Bass took the easier, more ennobling route. 