Hi, Arthur was the king once (ie in the past) and he wil be the king again in the future . Best wishes, Clive
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DamianaThank you! And is the epithet applicable to other nouns, or is "once and future king" rather phraseological? The Google gave me an example as odd as "The Once and Future Carbohydrate Economy".Additionally, I would say that any use of "once and future" is a reference back to the Arthurian phrase (most probably, slightly humorously).