Wikipedia
Endaka
Endaka (, lit. yen expensive) or Endaka Fukyo (, lit. yen expensive recession) is a state in which the value of the Japanese yen is high compared to other currencies. Since the economy of Japan is highly dependent on exports, this can cause Japan to fall into an economic recession.
The opposite of endaka is en'yasu (, lit. yen inexpensive), where the yen is low relative to other currencies.