The term 'left speechless' is used to describe a person who is so overwhelmed by something that they are unable to speak. This can be due to shock, awe, amazement, or any other strong emotion. The crossword solutions for this term are AWED (4 letters), AMAZED (6 letters), GOBSMACKED (10 letters), DUMBSTRUCK (10 letters), and INAWE (5 letters). All of these words describe a person who is so overwhelmed by something that they are unable to speak.