An anodyne is a medicine that soothes or relieves pain.
A state of anarchy occurs when there is no organization or order in a nation or country, especially when no effective government exists.
If something is an anomaly, it is different from what is usual or expected; hence, it is highly noticeable.
An anecdote is a short personal story that someone tells that is interesting or amusing.
When someone wishes to remain anonymous, they do not reveal their name.
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