informal
B2Pronunciation
UK
- /ɪnfˈɔːməl/
US
- /ˌɪnˈfɔrməl/
Description
- Casual
- Relaxed
- Unofficial
- Easygoing
- Low-key
Think of your best friend's living room—comfy couches, maybe some mismatched pillows, and definitely no stuffy rules about where you sit. That's informal. It describes things that are relaxed, casual, and friendly rather than strict or official. An informal conversation is a chat with a friend, not a business meeting. An informal outfit might be jeans and a T-shirt, while a formal one would be a suit. You'd use informal language when texting your sibling, but you would likely switch to more formal language when writing a cover letter for a job application. It's all about the setting and who you're with!
"Informal" describes something lacking strict rules, conventions, or formality. It suggests a relaxed atmosphere and a comfortable approach—think of it as the opposite of "formal." This can apply to many different areas of life.
An informal setting is one where you feel at ease and don't need to worry about following rigid etiquette. A backyard barbecue is informal; a state dinner is not. Informal language, like slang or contractions ("can't" instead of "cannot"), is the kind we use with friends and family—it's conversational and relaxed.
The context matters! While an informal email to a colleague might be perfectly acceptable, an informal legal document would be disastrous. A company might have an informal dress code (allowing jeans on Fridays) or an informal organizational structure (less hierarchy).
Sometimes "informal" simply means not official. An informal agreement between neighbors to share a driveway isn't legally binding, but it is still understood and respected. It can also describe something done without planning or ceremony—like an informal gathering of friends after work.
So, whether you're describing a setting, language, clothing, or an arrangement, "informal" signals a departure from strict rules and a preference for comfort, ease, and naturalness.
Examples
- 1
Dress code
The restaurant is quite informal, so you don't need to dress up.
- 2
Email tone
His email was warm and informal, which made him sound easy to talk to.
- 3
Job interview
The interview felt informal, and that helped me relax.
- 4
Unofficial agreement
We had an informal arrangement to look after each other's kids after school.
Phrase
informal arrangement
something people agree on without making it official
- 5
School meeting
The principal invited parents for an informal chat after the presentation.
- 6
Workplace tone
In this office, it's normal to be fairly informal with senior staff.
Pattern
be informal with + person
speak to them in a more relaxed way
- 7
Diplomatic talks
The ministers met for informal talks before the official negotiations began.
Forms and spellings
1 form open this card.
Main spelling
- informaladjective