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Use "unripeness" in a sentence
"In short, I am a very pretty green fruit, with all the charm of unripeness."
"The ripeness, or unripeness, of the occasion (as we said) must ever be well weighed; and generally it is good, to commit the beginnings of an great actions to Argus, with his hundred eyes, and the ends to"
"He might before have speculated about the unripeness of Germany for the revolution he envisioned,but now, in the heat of the moment, he was as ready as Lincoln or Alexander had been to act."