Is "neglectful" a prefix or suffix?

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The word "neglectful" does not contain a prefix or a suffix that stand alone; rather, it is a whole word. However, if we break down the word "neglectful," we can notice that it is composed of the base word "neglect," which means to fail to care properly for something or someone, and the suffix "-ful," which means full of or characterized by. So in the word "neglectful," the "-ful" part is a suffix that describes a condition or quality of being full of something. In this context, "neglectful" describes a quality of tending to neglect.