informality
1. [ noun ] a manner that does not take forms and ceremonies seriously
Related terms: formality manner unceremoniousness casualness
2. [ noun ] freedom from constraint or embarrassment
Synonyms: ease
Examples:

"I am never at ease with strangers"

Related terms: naturalness
Similar spelling:   informal
  informally
  informant
  infirmity
  informatively
  informatory
  informative
  information
  informatics
  informercial
  informer
  informed
  informing