Definition of unfriendliness:

part of speech: noun

Want of kindness.

Usage examples:

• She was sorry to be accused of unfriendliness but nothing was farther from her thoughts; she was very busy, very much engaged. Rosa Nouchette Carey in "Lover or Friend".

• He undid the gate and pitched into the yard, plunging into great pools of water and seeing on every side of him the uncertain shapes of the barns and sheds and opposite him the great dark front of the house, so black in its unfriendliness sharing in the night's rough hostility. Hugh Walpole in "Fortitude".

• Something of the unfriendliness of fate seemed to overcast his resentment, and he allowed the sadness of his conviction that he had not the means to marry on to tinge his recognition of the fact that Alma Leighton would not have wanted him to marry her if he had. William Dean Howells in "A Hazard of New Fortunes, Part Fifth".