serv
keep, guard, save
Usage
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reserved
Someone who is reserved is quiet, self-controlled, and keeps their thoughts mostly to themselves.
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observe
When you observe something, you watch it carefully to see what is happening.
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reserve
When you reserve something, you keep it for yourself so that you are able to use it when you need to.
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preserve
When you preserve something, such as a forest or food, you keep it from being destroyed or from harm coming to it by taking good care of it.
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