What is the Greek word of genuine?

There isn't one single perfect Greek word translation for "genuine." The best choice depends on the nuance you want to convey. Here are a few options, with slight differences in meaning:

* γνήσιος (gnēsios): This is probably the closest single word. It means "genuine," "authentic," "legitimate," or "true-born." It often refers to something's origin or lineage.

* αληθινός (alēthinos): This means "true" or "real." It emphasizes truthfulness and lack of deception.

* αυθεντικός (authentikós): This word, borrowed from French, is now commonly used and means "authentic." It suggests that something is original and not a copy.

The best word to use will depend on the context. If you're talking about the genuine article, γνήσιος (gnēsios) is a strong choice. If you're emphasizing truthfulness, αληθινός (alēthinos) might be better. And if the focus is on originality, αυθεντικός (authentikós) works well.