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To discourage (someone) from doing something by instilling doubt or fear of the consequences.
I feel like we originally had the correct idea, however we have since deetered off the path a bit.
Deeter by jicee13 January 10, 2019
A Deeter is anything and everything you can point your finger at and laugh.
You got Deeter on your face.

You dropped your Deeter.

You dropped your Deeter stick.

Is that a Deeter in your pocket or are you happy to see me?
Deeter by jbays420 March 9, 2009
An effect in investment trading where the best intentions always result in disaster. If a sum is placed in stocks, the market will immediately collapse. You then Deeter and transfer your stocks to bonds as a stop loss. The stock market then rallies to all time highs and the bond market languishes causing you to Deeter again and transfer your bonds to stocks at a great loss in hopes of catching the market rally.
I put my money in stocks and the market dropped so I did a Deeter and put it in bonds and then the stock market rallied and I did another Deeter and put it back in stocks. I lost my ass! Damn my Deeter ways!
Deeter by wheaty January 2, 2009
when someone's being an idiot.
Layton: throws molotov at the escape route blocking it entirely

Me: God damnit, you're such a deeter!
Deeter by Bonkerino August 13, 2019

Deeter Mining 

Spending immeasurable amounts of time browsing the internet (most times aimlessly). Particularly popular with children and teens.
Get up and clean your room, you've been deeter mining all day.

Leaky Deeter

When the penis decides to leave a little present in your undies.
After taking a piss I made sure to shake it off, but I still had a leaky deeter.
Leaky Deeter by M Mac April 18, 2010