He had attended a performance and liked the work, but was disinclined to write a fantasia (as he put it in a letter to his family) on another composer's music.
Scientific research supports the common-sense observation that people are disinclined to risk being fooled by a single alarm that might prove false or accidental.
People are often disinclined to seek treatment, especially since their symptoms may not be taken seriously; thus dissociative disorders have been referred to as diseases of hiddenness.