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

• steak knife
• steak sauce
• steak tartare
• steakhouse
• steal
• steal away
• stealer
• stealing
• stealth
• stealth aircraft
• stealth bomber
• stealth fighter
• stealthily
• stealthiness
• stealthy
• steam
• steam bath
• steam boiler
• steam chest
• steam clean
• steam coal
• steam engine
• steam fitting
• steam heating
• steam iron