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

See also: informal

Antonym: formally

• waver
• waverer
• wavering
• waveringly
• waviness
• waving
• wavy
• wavy-grained
• wavy-leaved aster
• waw
• wawl
• wax
• wax bean
• wax begonia
• wax crayon
• wax figure
• wax insect
• wax light
• wax moth
• wax myrtle
• wax palm
• wax paper
• wax plant
• wax-chandler
• wax-myrtle family