informal meaning and definition

INFORMAL adjective

Definition of informal (adjective)

1. not formal
   • "conservative people unaccustomed to informal dress"; "an informal free-and-easy manner"; "an informal gathering of friends"
   • antonym: formal
2. not officially recognized or controlled
   • "an informal agreement"; "a loose organization of the local farmers"
   • synonyms: loose
3. used of spoken and written language
   • antonym: formal
4. having or fostering a warm or friendly and informal atmosphere
   • "had a cozy chat"; "a relaxed informal manner"; "an intimate cocktail lounge"; "the small room was cozy and intimate"
   • synonyms: cozy, intimate