Which term describes an open revolt against civil authority?

The term that describes an open revolt against civil authority is "insurrection." This word specifically refers to a violent uprising against an established government or authority, indicating a significant level of opposition that disrupts civil order. Insurrection is typically characterized by mass movements or rebellions initiated by citizens who seek to challenge or overthrow the current ruling power.

In contrast, other terms such as "inquisition," "infiltration," and "interference" do not convey the same idea of a rebellion against civil authority. An "inquisition" generally refers to a judicial inquiry or investigation, particularly associated with historical contexts of religious persecution. "Infiltration" suggests a process of entering an organization or system in a covert manner, usually for the purpose of gathering information or influence rather than open revolt. "Interference" indicates a disruption or intervention in a process or situation, but lacks the connotation of rebellion or opposition to authority. Thus, "insurrection" clearly stands out as the most accurate term to describe an open revolt against civil authority.