Top Definition
Short for instant favorite. Used when the option 'favorite' is available to show you like something.
"I was on DeviantArt the other day and found this awesome photograph, which was a total insta-fav in my opinion."
by TehShush March 09, 2009
Liking a YouTube video so much that within the first roughly ten seconds of watching it, you instantly favourite the video.
You (Thinking in head): "I love this video! (Just started watching)"
You (Commenting on video): "Great video! 5/5, instafav. :)"
by Itachi_love June 15, 2011
insta-fav is a word describing something you instantly love and/or consider your favourite; it is a combination of 'instant' and 'favourite'. Pronounced "insta fave".
Dude! I totally insta-fav that shirt!
I'm insta-faving that picture you drew, it's so awesome
Cool shoes - insta-fav!
by The_Aliway. July 18, 2010
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