Top Definition
When someone gets in the elevator with you and presses the button for a floor beneath the one you already chose, making your ride longer.
I got on the elevator to head back to my room last night but three people got on and undervated me.
by smtarves November 16, 2006

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.