The word "informal" in English means: Relaxed and friendly, not following strict rules of how to behave or dress., Suitable for everyday use; not formal or official..
The phonetic transcription of "informal" is /ɪnˈfɔːml/ in British English and /ɪnˈfɔːrməl/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "informal": casual, relaxed, unofficial, easygoing.
Example usage of "informal": "The party was informal, so we wore jeans.". More examples on the page.