If you circumvent something, such as a rule or restriction, you try to get around it in a clever and perhaps dishonest way.
Something that happens unexpectedly and by chance that is not inherent or natural to a given item or situation is adventitious, such as a root appearing in an unusual place on a plant.
The advent of something new, such as an invention, marks the beginning of its arrival or appearance to the world at large.
A conventional way of thinking or behaving is the one that is most commonly accepted by social groups.
An adventurous person loves trying new things or taking risks in order to make their life more exciting.
An event is something that occurs or takes place and is usually an important occurrence or happening of some kind.
When you prevent something, you keep it from happening.
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