1. Informal language used in everyday conversation, characterized by casual speech patterns, slang, and relaxed grammar rules
He uses colloquial language when texting his friends.
Ele usa linguagem coloquial quando está mandando mensagens para seus amigos.
2. The natural, conversational style of speaking or writing as opposed to formal or literary language
The novel was written in colloquial language to make it relatable to readers.
O romance foi escrito em linguagem coloquial para torná-lo acessível aos leitores.