languish

Short definition from Wiktionary

Verb

1. 1
   To lose strength and become weak; to be in a state of weakness or sickness.
2. 2
   To pine away in longing for something; to have low spirits, especially from lovesickness.
3. 3
   To live in miserable or disheartening conditions.
4. 4
   To be neglected; to make little progress, be unsuccessful.
5. 5
   To make weak; to weaken, devastate.
6. 6
   To affect a languid air, especially disingenuously.