ad kalendas Graecas

American  

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

adverb

Latin.

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

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Etymology

Origin of ad kalendas Graecas

Literally, “at the Greek calends”