What term refers to inflicting great distress and torment?

The term that refers to inflicting great distress and torment is "harrow." In literature and common usage, "harrow" conveys a sense of deep emotional pain and suffering, often associated with trauma or severe distress. It originates from the agricultural tool that breaks up soil, giving it a metaphorical implication of breaking the spirit or mental state of an individual.

In contrast, the other terms do not convey the same meaning of distress. "Hasten" refers to making something happen more quickly, while "hinder" means to obstruct or delay progress. "Harmonize," on the other hand, suggests creating a pleasing arrangement or agreement, which is the opposite of inflicting distress. Therefore, "harrow" is the appropriate term when discussing the act of causing significant emotional torment.