1. In an outstanding manner or to an outstanding degree
   "she was outstandingly successful in her profession" 
2. To a remarkable degree or extent
   - unusually, remarkably, unco [UK, dialect], uncommon [archaic]

See also: outstanding

• so that
• so there
• so to speak
• so what
• so-and-so
• so-called
• so-so
• soak
• soak through
• soak up
• soakage
• soakaway
• soaked
• soaker
• soaking
• soaking up
• soap
• soap bubble
• soap dish
• soap dispenser
• soap film
• soap flakes
• soap opera
• soap pad
• soap powder