Greentastic 

Something which is considered amazing or cool for how enviornmentally conscious, or 'green' it is.

My new Prius is greentastic!

I'm taking this carbon neutral trip to Haiti to help install solar panels, isn't that greentastic?

Forget bottled water, filtered tap water tastes greentastic!

Greentastic by LilMountain April 22, 2011

geektastic 

Someone/something that is both geeky and fantastic.

"Those new sneakers of yours are totally geektastic!"

"That cute guy in the glasses is very geektastic."

geektastic by ilikeyourshoes April 30, 2005

grantastical 

one of Don King's crappy words, meaning fucking cool.

You're about to see the most grantastical fight you've ever seen...ur gay.

grantastical by Anonymous September 3, 2003

greatastic 

this is the greatest fantastic thing ever

that sex was grearastic

greatastic by mike May 13, 2005

GleeTastic 

As good as glee

"Those sparkly chaps are gleetastic" - rob

GleeTastic by evilnobby January 25, 2011

greatastic 

its when something is the most perfectest awesome thing ever

man that sex was greatastic

greatastic by michael bates May 13, 2005

Greenatic 

Really, really super obsessed with the band Green Day.

I am the most Greenatic person you will ever have the pleasure of meeting.

Greenatic by em-er-ly November 8, 2009