Answer:
Dumbfounded or Awestruck could work
Step-by-step explanation:
Malcolm X was an American Muslim minister, human rights activist, and one of the most powerful leaders of black America during the civil rights movement. In 1946 he was convicted of robbery and condemned to spend seven years in prison.
Being in prison he decided to educate himself, claimed afterward that he spent two days turning over the dictionary’s pages overwhelmed because of the number of words that were unknown for him until that moment, making him realize as well the huge amount of new words that he needed to learn.
Bearing the above in mind, it could be said that Malcolm X's attitude towards the dictionary could best be described as both awestruck or dumbfounded.