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ad kalendas Graecas

[ ahd kah-len-dahs -grahy-kahs; English ad kuh-len-duhs -gree-kuhs ]
/ ɑd kɑˈlɛn dɑs ˈgraɪ kɑs; English æd kəˈlɛn dəs ˈgri kəs /
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adverb Latin.

at no time; never: from the fact that the Greeks did not reckon dates by calends.

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Origin of ad kalendas Graecas

Literally, “at the Greek calends”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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