Hendiadys

Hendiadys (/hɛnˈdaɪ.ədᵻs/; a Latinized form of the Greek phrase ἓν διὰ δυοῖν, hèn dià duoîn, "one through two") is a figure of speech used for emphasis — "The substitution of a conjunction for a subordination". The basic idea is to use two words linked by the conjunction "and" instead of the one modifying the other.

The term hendiaduo may also be used. The 17th century English Biblical commentator Matthew Poole referred to "hendiaduos" in his comments on Genesis 3:16, Proverbs 1:6 and Isaiah 19:20.

English names for hendiadys include two for one and figure of twinnes.

The typical result of a hendiadys is to transform a noun-plus-adjective into two nouns joined by a conjunction. For example, sound and fury (from act V, scene 5 of Macbeth) seems to offer a more striking image than "furious sound". In this example, as typically, the subordinate idea originally present in the adjective is transformed into a noun in and of itself. Another example is Dieu et mon droit, present in the coat of arms of the United Kingdom. In fact, hendiadys is most effective in English when the adjectival and nominal forms of the word are identical. Thus "the cold wind went down the hall" becomes the cold and the wind went down the hall. He came despite the rain and weather instead of "He came despite the rainy weather". The title of the novel The Once and Future King suggests history, foretelling, and an interrupted action are involved in a story of political drama, using only a few words.

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