1. 
2. 
[syn: sadly, unhappily]
The Collaborative International Dictionary of English v.0.48:
Unhappy \Un*hap"py\, a.
   1. Not happy or fortunate; unfortunate; unlucky; as, affairs
      have taken an unhappy turn.
      [1913 Webster]
   2. In a degree miserable or wretched; not happy; sad;
      sorrowful; as, children render their parents unhappy by
      misconduct.
      [1913 Webster]
   3. Marked by infelicity; evil; calamitous; as, an unhappy
      day. "The unhappy morn." --Milton.
      [1913 Webster]
   4. Mischievous; wanton; wicked. [Obs.] --Shak.
      [1913 Webster] -- Un*hap"pi*ly, adv. --
      Un*hap"pi*ness, n.
      [1913 Webster]
WordNet (r) 3.0 (2006):
unhappily
    adv 1: in an unpleasant way; "they were unhappily married" [ant:
           blithely, gayly, happily, jubilantly, merrily,
           mirthfully]
    2: in an unfortunate way; "sadly he died before he could see his
       grandchild" [syn: sadly, unhappily] [ant: happily]