The quality of being dismaying; the state of causing dismay or deep disappointment.
A complex derivation: 'dismay' → 'dismaying' → 'dismayingness', combining the participle with the '-ness' suffix. This represents the deepest level of nominalization possible in English.
Words like 'dismayingness' are theoretically perfect but practically unused—they're so redundant ('the dismayingness of the situation' could just be 'the dismay of the situation') that language naturally discards them. This is why English speakers invent fewer '-ingness' words than '-ness' words.
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