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Tsundere is a slang born on the Internet, and it is a word to describe the nature of female anime or game characters. Tsundere is a word combining two words, "Tsun Tsun" and "Dere Dere". Both terms describe attitudes of a person. "Tsun Tsun" is used for cold/blunt/curt attitude, while "Dere Dere" is used when a person becomes spoony in front of his/her lover.
(Definition is from the game " Tsuyokisu Cool×Sweet ")
Therefore, "Tsundere" is a female character who is usually cold, but she becomes spoony on her lover. Or, she is cold to the main character at first, but she becomes lovestruck later.
by rawr i'm a lion July 02, 2006
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2
1: being on the surface sharp and sarcastic (tsuntsun) but underneath lovestruck and fawning (deredere); characteristic of a gap between acted out actions and feelings in mind;
2: normally being sharp but at some prompt suddenly becoming lovestruck; hot-cold personality type
そうやって俺のことを気にしつつ、しかし素直になりきれない、そのツンデレtsundereさが今若い男の間で大ブーム!
by grenciae December 21, 2008
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3
Japanese slang for one who is not nice and gets pissed off easily on the outside, but deep in the inside, is nice, caring, and gentle at all costs to the main character. It is usually used in anime/manga. The tsundere character usually shows his/her tsundere-ness in the later episodes/volumes/chapters.
Kagami Hirragi from the anime/manga Lucky Star is a great example of tsundere.
by MisaTange July 08, 2009
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Tsundere describes someone who isn't very nice, but overtime changes to be nicer.

Or it could describe someone who deeply loves someone but tries to hide it from everyone.

Or it could mean some sadist bitch who beats the absolute shit out of the one she loves.
Boring as all hell main character: You're cute.

Tsun-chan: B-b-baaaaaka!

Boring as all hell main character's stupid pervy friend: What a tsundere.
via giphy
by Everythingphobic everythingist December 27, 2016
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5
When a person acts cold towards another before gradually warming up to that person or person who acts cruel to the ones they love also called a lovehate relationship
I think your bully is a tsundere, I mean he totally has a crush on you.
by otakulove February 01, 2011
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6
A girl who hates the fact that she loves the fact that she's in love with you
She's such a bit- I mean tsundere, right guys?
by GardevoirIsLove February 15, 2017
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7
As you've heard already, this is a anime stereotype where a character is violent and defensive at first, but sweet and affectionate in later on.
If you get a tsundere mad, you're best bet is running.
by Paradoxmi_st November 10, 2016
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