the 10th letter of the Greek alphabet
"The kappa is the tenth letter of the Greek alphabet, appearing between iota and lambda."
The tenth letter of the Greek alphabet.
"I will definitely start my homework right now; kappa."
A tortoise-like demon or imp.
An emote, often used as a postscript, to indicate that the preceding statement is sarcastic or false.
In plain English: Kappa is an ancient Greek letter that comes right after lambda and before mu on the alphabet.
"The children loved swimming in the river where they said little kappa lived under the water lilies."
Used to indicate sarcasm in imitation of Kappa as used on Twitch.tv
"When my friend sarcastically called out a streamer's bad gameplay, he ended his message with the classic kappa."
The word kappa is a learned borrowing from Ancient Greek that originally meant "palm" or "hand." It shares its ultimate origin with the Proto-Semitic root *kapp-.