Select the most appropriate one-word substitution for the given group of words. 

To walk around a place especially in a ritual fashion 

Circumambulate

The most appropriate one-word substitution for the given group of words "To walk around a place, especially in a ritual fashion" is "Circumambulate."

Here are the explanations of the four options:

1. Circumlocution: "Circumlocution" refers to the use of excessive words or indirect language to express an idea, often resulting in roundabout or evasive speech. It does not relate to walking around a place in a ritual manner.

2. Anachronism: "Anachronism" refers to something that is out of its proper chronological or historical order. It describes an object, event, or idea that is not appropriate for the particular time period being discussed. It does not pertain to walking around a place in a ritual fashion.

3. Retrospect: "Retrospect" refers to looking back or reflecting on past events or experiences. It involves reviewing or considering something that has already happened. It does not specifically relate to walking around a place in a ritualistic manner.

4. Circumambulate: "Circumambulate" is the correct term to describe the act of walking around a place, especially in a ritualistic or religious context. It often involves moving in a circular or clockwise direction around a sacred site, shrine, or object as part of a ceremonial or spiritual practice.