The quality or state of being appeasable; the capacity to be satisfied, calmed, or made content through some action or compromise.
From 'appeasable' plus the suffix '-ness,' creating an abstract noun for the quality itself. This follows the standard pattern of adjective + -ness → noun.
This is a word political theorists and historians have actually used when debating whether dictators can be negotiated with. The concept of 'appeasableness' became politically loaded in the 20th century, tied to the failed strategy of appeasing Hitler in the 1930s.
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