1. Casual conversation or communication that does not follow formal rules of grammar, etiquette, or official protocols
The informal discourse at the coffee shop revealed the true opinions of the community members.
O discurso informal na cafeteria revelou as verdadeiras opiniões dos membros da comunidade.
2. A relaxed style of speaking or writing characterized by colloquial language and spontaneous expression
Informal discourse on social media often lacks the polish of traditional journalism.
O discurso informal nas redes sociais frequentemente carece do refinamento do jornalismo tradicional.