Fuandere

Unlike a tsundere, who looks hostile toward people on the outside, but caring on the inside, a fuandere is someone who may act anxious toward other people, but is also caring on the inside. One of the unheard words in the -dere family of words.

Etmology:
"Fuandere" is derived from the Japanese words "fuan", meaning "anxious", and "deredere" meaning "lovey dovey". It literally means "anxious love" in Japanese.