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

See also: informal

Antonym: formally

• Dipsosaurus
• Dipsosaurus dorsalis
• dipstick
• Diptera
• dipteran
• dipterocarp
• Dipterocarpaceae
• dipteron
• Dipteronia
• dipterous
• dipterous insect
• Dipteryx
• Dipteryx odorata
• diptych
• Dipus
• Dipylon
• Dipylon gate
• Dirac
• Dirca
• Dirca palustris
• dire
• dire straits
• direct
• direct access
• direct action