Nowadays, at the present time (or day). So in Latin, Nunc diērum and Nunc tempŏris. The prefix “a” = at, of, or on. Simularly, anights, of late, on Sundays. All used adverbially.
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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.
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