What describes someone who provides additional help or support?

The term "auxiliary" specifically refers to someone or something that provides additional help, support, or assistance. In various contexts, auxiliary can describe services, roles, or equipment that are supplementary to the main functions, emphasizing their supportive nature. For example, in a medical setting, an auxiliary nurse assists doctors and other healthcare professionals, enhancing the overall effectiveness of patient care.

In contrast, the other terms do not convey the same meaning of providing support. "Articulate" refers to someone who is able to express themselves clearly and effectively, focusing on communication rather than support. "Autocrat" describes a ruler or leader with absolute power, which implies dominance rather than assistance. "Astute" indicates someone who is shrewd and able to assess situations effectively, often used in the context of judgment or insight, rather than supportiveness. Thus, "auxiliary" is precisely the term that captures the essence of providing additional help or support.