Present participle of diabolize; in the process of making something diabolic or extremely wicked.
Formed by adding -ing to diabolize, the American English spelling of the verb, indicating ongoing or continuous action.
The -ing form is incredibly efficient in English—it simultaneously works as a verb form, an adjective, and a noun, making it one of the most multifunctional morphemes.
Complete word intelligence in one call. Free tier — 50 lookups/day.