ennoble
verb [ T ] uk/ɪˈnəʊ.bəl/ us/ɪˈnoʊ.bəl/
封…为贵族
to make someone a member of the nobility (= highest social rank)
literary使更崇高，使更高尚；使更尊贵
to make something or someone better so that people admire it, him, or her more
He has this theory that suffering can ennoble a person's character. 他认为苦难可以使一个人的人格变得高尚。