Top Definition
A feeling evoked by an extremely pleasant surprise. That is, the simultaneous feeling of being flattered and flabbergasted.
"Today I was told that I was sexy. A hobo told me this. I was flattergasted."
by Slick Rick Bacon May 09, 2005

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A state of uncertainty, brought on by an unsolicited or unwarranted barrage of compliments. This sensation is typically followed by the raising of a bullshit alarm, and is most usually induced by a frenemy.
-"Oh, cutie, you have been so funny tonight...(later at the same party)...that's a really nice shirt. It really brings out your eyes, and I've never noticed how amazing they are...(yet again, later, same party)...this is the best sex I've ever had. I've never felt this way with anyone before. You are without doubt the best lover in the world"
- (you, all the while, thinking:) 'Uh, ok(?)...uh, whatever...Is she for-fucking-real? This was a mistake. I'm so utterly flattergasted right now. '
by jawasan August 05, 2015

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt