Japanese edit

For pronunciation and definitions of あっか – see the following entries.
悪化
[noun] aggravation, deterioration, degeneration, corruption
[verb] to worsen, to aggravate, to deteriorate
Alternative spelling
あっ化
悪貨
[noun] bad money
悪果
[noun] negative consequence; disastrous effect
(This term, あっか, is the hiragana spelling of the above terms.)