thumbnailable 

Describes a person who is very attractive in their internet thumbnail, but turns crazy ugly the second it is enlarged to full size.

That girl is ugly, but her facebook page makes her look thumbnailable.

thumbnailable by HoneyBee123 June 1, 2009

thumbnail 

the little pictures that make looking at porn so much easier and simplier

i looked at all the thumbnails of the dirty bitch

thumbnail by themainevent November 17, 2003

thumbnail hole 

A word used when there is a hole in a wall, usually in a video game, where the character/person must make it through a small hole that may seem rather hard to fit in. The image is then saved and uses as a thumbnail on YouTube videos.

YouTuber: That would make a great thumbnail hole!

thumbnail hole by Kummalii October 11, 2021

Thumbnail Betrayal

A thumbnail betrayal occurs on social networking sites such as facebook (the application 'are you interested' for example) when a male or female look really hot in their display picture, so u click thinking 'hell yea this is sweet' only to find out that they must have used some sort of magic 'grotesque removing' camera to take that picture with because they are, in fact, like a pile of shit which has been puked on. . attached to a bean bag chair. . with hair. .

dude: sweet this girl is hot *clicks*
dude 2: yea she looks sweet, look at her other photos
dude: omg ewwwww that was a pure thumbnail betrayal!! *gips*

Thumbnail Betrayal by muse rock October 6, 2008

thumbnail pretty 

When someone on an online dating site looks attractive in the list, but when you click to view their profile and see a larger image, you realize they're actually not attractive at all.

I thought he was hot, but then I zoomed in and realized he was only thumbnail pretty.

thumbnail pretty by Claire McNight February 21, 2010

clickbait thumbnail 

A thumbnail that shows something that doesn't appear in the video. Commonly found in Best Trends and Trend Spot videos.

5 FORTNITE YOUTUBERS WHO CAUGHT GHOSTS ON CAMERAS!!!! (SCARY)

The clickbait thumbnail shows a witch outside Tfue's window and it says Tfue... I found you!

clickbait thumbnail by BigSmoke40 November 24, 2020

Thumbnail 

1 - The nail of the thumb
2 - Something that is small or brief; concise
3 - A printing; small and rough

1 - Look at Joe's bleeding thumbnail!
2 - Jane quickly wrote a thumbnail summary of the chapter she had read.
3 - Bob drew a thumbnail sketch of his idea before he started his actual picture.

Thumbnail by 7sdrawkcab May 3, 2009