Rainbow
Rainbow noun - An arc of colored light in the sky caused by refraction of the sun's rays by rain.
Spectre
Spectre noun - A ghostly appearing figure.
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Synonyms for Spectre
Rainbow and spectre are semantically related. Sometimes you can use "Rainbow" instead a noun "Spectre".
Both words in one sentence
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In Layton's London Life, a bonus RPG packaged with some versions of Professor Layton And The Last Spectre, rainbow speak will indicate whether a character's speech affects your character's happiness.
Source: Rainbow Speak -
Rainbow Valley (1919) - The spectre of innocence about to be lost, and the idealism that eventually led to disaster, hovers over these further adventures of the Blythe kids and their friends in the years immediately preceding WWI.
Cite this Source
Spectre and Rainbow. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/rainbow/spectre
Rainbow & Spectre. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/rainbow/spectre>.
Spectre or Rainbow. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/rainbow/spectre.
Google Ngram Viewer shows how "rainbow" and "spectre" have occurred on timeline