Present participle of colloquize; the act of engaging in formal conversation or dialogue.
From colloquize + -ing (present participle and gerund suffix). An extremely rare form reflecting the minimal adoption of colloquize in English.
Colloquizing is a word that looks perfectly grammatical but sounds almost pretentious—and that's because we've settled on 'discussing' and 'conversing' instead. Language selects for efficiency and comfort, and colloquize lost both races.
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