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Use "unfrequent" in a sentence
"Appenfell was one of those mountains, not unfrequent, which is on one side abrupt and bounded by a wall of almost fathomless precipice, and on the other descends to the plain in a cataract of billowy undulations."
"I HAVE rared up and ripsnorted at spells, but most unfrequent."
"Antelope also were very numerous, and as they were quite tame -- being seldom chased -- and naturally very inquisitive, it was not an unfrequent thing to see one of the graceful little creatures run in among the men and be made a prisoner."