Spoken language or colloquial speech — the form of language used in everyday conversation, as opposed to written language.
授業では文語と口語の違いについて学んだ。
In class we studied the differences between written style and spoken language.
友達との会話ではかしこまった言葉より口語の方が自然だ。
In conversations with friends, colloquial expressions feel more natural than formal language.
日本語の教科書には口語表現の例がたくさん載っている。
Japanese textbooks include many examples of colloquial expressions.
Modern written Japanese style based on contemporary spoken language (the colloquial written style); written style modeled on modern speech.
この小説は口語体で書かれていて読みやすい。
This novel is written in a colloquial style and is easy to read.
新聞は堅い文語調よりも口語的な表現を増やしている。
Newspapers are using more colloquial expressions rather than stiff, literary language.