The quality of being in the process of crumbling; the tendency to break apart into pieces.
From 'crumbling' (present participle of 'crumble') plus '-ness.' An archaic or poetic formation creating an abstract noun with doubled suffix emphasis.
This word is so archaic and poetic it barely exists in modern usage—it represents how English allowed stacked suffixes to create subtle emotional gradations, like choosing between 'crumbling' and 'the crumblingness of time.'
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