Tackinesses are the quality of being sticky or not stylish.
Tackinesses are usually not good because they mean something is not cool or fashionable.
Examples:
The tackinesses of the glue made it hard to get off my fingers.
The tackinesses of his outfit made everyone laugh.
I don't like the tackinesses of that decoration.
The tackinesses of her singing made everyone cover their ears.
The tackinesses of that party were so bad, I couldn't stay.
The tackinesses of the old wallpaper made it famous.