1. In a joyous manner
   "they shouted happily"
   - merrily, mirthfully, gayly, blithely, jubilantly, euphorically 
2. In an unexpectedly lucky way
   "happily he was not injured"

See also: happy

Antonym: sadly, unhappily

• genus Holarrhena
• genus Holbrookia
• genus Holcus
• genus Holocentrus
• genus Holothuria
• genus Homarus
• genus Homo
• genus Homogyne
• genus Homona
• genus Hordeum
• genus Horneophyton
• genus Hosta
• genus Hottonia
• genus Houttuynia
• genus Hovea
• genus Hoya
• genus Hudsonia
• genus Hugueninia
• genus Hulsea
• genus Humulus
• genus Hunnemania
• genus Hyacinthoides
• genus Hyacinthus
• genus Hyaena
• genus Hyalophora