keep, guard, save
Someone who is reserved is quiet, self-controlled, and keeps their thoughts mostly to themselves.
When you observe something, you watch it carefully to see what is happening.
When you reserve something, you keep it for yourself so that you are able to use it when you need to.
When you preserve something, such as a forest or food, you take care of it to keep it from being used or harmed.
an occurrence of improvement by virtue of preventing loss or injury or other change
someone who works to protect the environment from destruction or pollution
resistant to change
the faculty and students of a school specializing in one of the fine arts
keep constant through physical or chemical reactions or evolutionary change
paying close attention especially to details
the act of making and recording a measurement
a building designed and equipped to observe astronomical phenomena
the activity of protecting something from loss or danger
tending or having the power to preserve
a district that is reserved for particular purpose
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