1. The quality or state of being naff; lack of style, taste, or sophistication; tackiness.
Usage: British informal; Often used to describe fashion, design, or behavior perceived as unfashionable or in poor taste

Examples

• The naffness of the 1970s décor made the room feel dated and uncomfortable.
• She criticized the naffness of his outfit, which clashed terribly.
• The hotel's naffness was evident in its garish colors and cheap furnishings.
• He embraced the naffness of retro fashion ironically.
• The naffness of the tourist attraction put off many visitors.