1. protected
We protected ourselves against danger.
The surrounding hills protected the town.
The flowers are protected against the weather.
The mother cat protected her kittens.
Unless whales are protected, they will become extinct.
The policeman protected the witness.
Troops inside the walls were well protected.
Fish stocks are declining due to over-protection of whales, so fish that whales can eat should also be protected.
Danish is recognised as a protected minority language in the German state of Schleswig-Holstein.
Every experiment required a protected environment and an entirely objective frame of mind.
Fresh-water fish include some designated as protected species. You're not allowed to catch or buy them.
More recently, some hutongs have been designated as protected areas in an attempt to preserve this aspect of Chinese cultural history.
That institution must be protected.
Astro Boy protected the country from danger.
This right must be protected at all costs.