hysteron proteron
Concise Oxford English Dictionary © 2008 Oxford University Press:
hysteron proteron /ˌhɪstərɒn ˈprɒtərɒn/
▶noun Rhetoric a figure of speech in which the natural order of elements is reversed.
– origin C16: late L., from Gk husteron proteron ‘the latter (put in place of) the former’.
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