くさくさ

adverb, noun or participle which takes 'suru'

depressed; gloomy; downhearted

Mimetic word describing a lingering, dull feeling of depression or gloom. Often used with する to mean 'feel depressed'.

• 雨あめの日ひが続つづくと、なんだかくさくさする。

  When rainy days continue, I feel kind of depressed.