Here is a context clues worksheet on the verb emanate. It is used both intransitively and transitively; it means respectively (intransitively and transitively, that is), “to come out from a source <a sweet scent emanating from the blossoms>” and “emit <she seems to ~ an air of serenity>.” This is still a word in relatively common use. It’s hard to imagine a reason why high school graduates should not be in possession of this word and its meaning.
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