The term 'SOUND RESONANTLY' can be broken down into two crossword solutions: 'RING' (4 letters) and 'RINGOUT' (7 letters). 'RING' is a verb that means to make a clear, high-pitched sound, usually by striking an object. 'RINGOUT' is a verb that means to produce a loud, resonant sound, often by striking an object multiple times. Both terms refer to the act of producing a sound that echoes or reverberates in a space.