1. Without formality
   "he visited us informally" 
2. With the use of colloquial expressions
   - colloquially, conversationally

See also: informal

Antonym: formally

• chimneypiece
• chimneypot
• chimneystack
• chimneysweep
• chimneysweeper
• Chimonanthus
• Chimonanthus praecox
• chimp
• chimpanzee
• ChiMwini
• chin
• chin music
• chin rest
• chin strap
• chin-chin
• chin-up
• chin-wag
• chin-wagging
• china
• China aster
• china cabinet
• china clay
• china closet
• China fleece vine
• China grass