Discourteousness, lack of proper breeding; unchivalrousness.(noun)
Harshness, roughness.(noun)
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Use "ungentleness" in a sentence
"Be all ungentleness and harm excluded from the temples of the Household Gods, but be those remembrances admitted with tender encouragement!"
"And yet from the beginning of our existence down to a time within the memory of babes England has distressed herself piteously over the ungentleness of our Connecticut Blue Laws."
"Sir, said Sir Lamorak, now I understand your knighthood, it may not be false that all men say, for of your bounty, noblesse, and worship, of all knights ye are peerless, and for your courtesy and gentleness I showed you ungentleness, and that now me repenteth."