The term 'anthem opening' can be summarized by two crossword solutions: 'stood' (5 letters) and 'osay' (4 letters). 'Stood' is a verb meaning to rise up or remain in an upright position, often as a sign of respect. 'Osay' is an archaic term for the phrase 'oh say, ' which is the beginning of the United States national anthem, 'The Star-Spangled Banner.' Together, these two words represent the act of standing up and saying the opening words of the national anthem.