This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Plural form of rite.

"The job of the popularizer of science, trying to get across some idea of quantum mechanics to a general audience that has not gone through these initiation rites, is daunting."

last rites   

benights    bites    bytes    cites    delights    excites    fights    flights    heights    ignites