Englishfor English speakers
authentic
Adjective
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Of the same origin as claimed; genuine.
The experts confirmed it was an authentic signature.
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Conforming to reality and therefore worthy of trust, reliance, or belief.
The report was completely authentic.
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Having authority.
version
Noun
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A version is something that exists in different forms.
Tomorrow, IBM is launching OS/2 2.0, the new version of its OS/2 operating software for personal computers.
The North American version of the car will have a larger engine.