British spelling: present participle of disorganise; the act or process of making something disorganized or breaking down organization.
From disorganise (verb) + -ing (gerund/participle suffix). Standard formation in British English paralleling American 'disorganizing.'
The -ing form bridges the gap between verb and noun perfectly—'disorganising meetings' uses it as a verb participle, while 'all this disorganising' uses it as a noun.
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