Sentence:  Nothing in all the preceding years had had the power to bring me closer to a knowledge of profound sorrow than the <WSD>breakup</WSD> of camp , the packing away of my camp uniforms , the severing of ties with the six or ten people I had grown most to love in the world . 
Meaning of the word marked with <WSD> tags:  the termination or disintegration of a relationship (between persons or nations)