informal
Definitions
Having a relaxed, friendly, or unofficial style or nature.
Not according to the prescribed official way; casual or improvised.
Relating to language used in everyday conversation rather than formal writing.
Examples
The company has an informal dress code that allows employees to wear jeans on Fridays.
We had an informal chat over coffee to discuss the new project ideas.
Synonyms
casual relaxed colloquial unofficial familiar easygoing unceremonious