The term 'highly educated' can be described by two crossword solutions: 'LEARNED' and 'LETTERED'. 'LEARNED' is a 7-letter word that means to have acquired knowledge through study or experience. 'LETTERED' is an 8-letter word that means to be educated, especially in literature and the humanities. Both words imply a high level of education, suggesting that the person has studied extensively and is well-versed in a variety of topics.