The state of being disposed or inclined toward something; a tendency, inclination, or mental readiness.
From disposed (in the sense of 'inclined' or 'minded') + -ness (state or quality). The suffix -ness creates an abstract noun from the adjective disposed.
The phrase 'disposedness to learn' once appeared regularly in educational texts—it's a beautiful way to describe that mysterious quality of whether a person's mind is actually open to new ideas.
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