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Use "fieriness" in a sentence
"But to contend with leukemia, Zubrod knew, was to contend with its fieriness and brittleness, its moody, volcanic unpredictability."
"In the end, I certainly do have a gaze – an ideal woman. it is not the same as anyone else. the way she moves, the way she looks, the manner in which she speaks, her intelligence, her fieriness/submission, her hobbies, etc. – this concept is unique to me."
"Hot potato, chilled chilli-garlic ginger mix and the fieriness of ginger."