Blue moon
Blue moon noun - A long or seemingly long period of time.
Millennium and blue moon are semantically related. In some cases you can use "Millennium" instead a noun phrase "Blue moon".
Millennium
Millennium noun - A span of 1000 years.
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Synonyms for Millennium
Blue moon and millennium are semantically related. Sometimes you can use "Blue moon" instead a noun "Millennium".
Nearby Words: millenary, millennial
Mutual synonyms
Related pairs
Cite this Source
Millennium and Blue moon. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/blue_moon/millennium
Blue moon & Millennium. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/blue_moon/millennium>.
Millennium or Blue moon. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/blue_moon/millennium.
Google Ngram Viewer shows how "blue moon" and "millennium" have occurred on timeline