Englishfor English speakers
competent
Adjective
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If you are competent at something you can do it. You are good at doing it.
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In some countries, if you are competent the law says you are not insane (crazy). This means you can decide things, and may be allowed to do somethings that crazy people are not allowed to do.
local
Adjective
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Something is local if it comes from a specific place. It often it means a place near the person who is speaking.
We do not like fruit grown in other countries. We like to eat local fruit.
local
Noun
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A person is local if the person comes from a specific place.
They did not trust people from other places. They only trust locals.
authority
Noun
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To have authority means to have the power to make a decision.
This judge has the authority to throw you in jail.
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If you are an authority on something, many people think you know very, very much about it.
The Pope is the highest authority in the Catholic church.