WordWeb Online

1. In a hopeless manner
   "the papers were hopelessly jumbled"; "he is hopelessly romantic"
    
2. In a dispirited manner without hope
   "the first Mozartian opera to be subjected to this curious treatment ran hopelessly for five performances"
   - dispiritedly
    
3. Without hope; desperate because there seems no possibility of comfort or success
   "he hung his head hopelessly"; "'I must die,' he said hopelessly"

See also: hopeless

Antonym: hopefully