noun
a state or quality of being unfriendly; lack of friendliness or warmth
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The unfriendliness of the receptionist made the visitors feel unwelcome.
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I can't stand the unfriendliness of some of my coworkers.
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The unfriendliness of that bouncer was next level rude.
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The storm clouds gathered overhead, casting an air of unfriendliness over the once cheerful picnic.