informal

気軽な、くつろいだ

堅苦しい作法や儀式にとらわれず、親しみやすくくつろいだ。

やさしい英語で： Relaxed and friendly, without strict rules about behavior or ceremony.

• The meeting was informal and friendly.
• Wear informal clothes to the party.
• We had an informal chat over coffee.

類義語： casual, relaxed

反対語： formal

よく使う表現： informal meeting, informal chat, informal atmosphere

口語的な、くだけた

改まった場より、日常会話や友人同士の文章で使う言葉。

やさしい英語で： Used in ordinary conversation or writing between friends, rather than careful or official language.

• This word is informal.
• Use informal language when writing to close friends.
• The dictionary marks some expressions as informal.

類義語： colloquial, conversational

反対語： formal

よく使う表現： informal language, informal speech, informal expression

非公式の、正式でない

通常の正式な規則や手続きを経ずに行われる。

やさしい英語で： Made or done without following the usual official rules or procedures.

• They reached an informal agreement.
• The payment arrangement was informal and never written down.
• An informal complaint may be enough to resolve the issue.

類義語： unofficial

反対語： formal, official

よく使う表現： informal agreement, informal arrangement, informal procedure