The present participle of 'disleave'; the act of abandoning or ceasing.
From 'disleave' + '-ing' suffix, creating the continuous or gerund form of the verb.
The '-ing' form turns an action into something we can talk about as a noun—'disleaving' transforms the verb 'disleave' into a concept, like how 'leaving' is the gerund of 'leave.'
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