When you get a bit teary-eyed after seeing something heartwarming or emotional, either in person or especially in social media; the level of mistiness you have afterseeing something heartwarming or emotional.
"Bruh...when I saw my daughter walk across that stage and get her diploma, my eyemidity went up..."

"I just saw that video of Bruno Mars singing to the girl who was in a coma. Eymidity level: 99.9%"
by etymologee March 30, 2017
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