Tackiness, a quality of being tasteless or low quality, is in the eye of the beholder. Bemoan the tackiness of your dad's beloved inflatable Christmas decorations all you want — he thinks they're perfect!
One person's valuable snow globe collection is just tackiness to another, who sees them as cheap plastic souvenirs. The other meaning of this noun is "stickiness," as in the tackiness of your desk after you accidentally spilled glue all over it. The two definitions come from separate roots: "poor taste" stems from a derisive Southern U.S. colloquialism, tackies, used to describe people from non-aristocratic families. The "stickiness" meaning derives from tack, "fastener."
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