unreasonableness
/ʌnˌriːzənˈbɛlnəs/ · un·rea·son·a·ble·ness
noun
- The quality or condition of being unreasonable; a lack of rationality, fairness, or sound judgment. The judge dismissed the lawsuit on the grounds of the plaintiff’s unreasonableness in demanding an impossible deadline.
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Did you know? In Anglo‑American legal jargon, "unreasonableness" is a key standard for assessing negligence, often phrased as the "reasonable person" test versus "unreasonableness".