неформални 英語で:

Women's Liberation is a broad-based but informal popular movement.

Today's party is informal.

The school uniform is convenient because it can be worn for both informal and formal occasions.

My American classes are more informal.

informal conversation

Informal diction is always full of mystery and surrealism.

This implies a fun and relaxed working atmosphere where team achievement is highly valued, communication is extremely important and traditional 3-hour meetings have been replaced by informal chats in the queue for coffee.

Don't be afraid to show yourself through speech and take every opportunity to speak to others in English and soon you will feel right at home in informal conversational situations.

Japanese speakers of English often have difficulty in dealing with informal conversation, such as at parties or in small informal groups.

In those days, or at any rate in Cambridge, laboratory life was rather informal.

small talk is what we call a polite and informal conversation about things which aren't really important or meaningful when meeting people socially

"One example of this is the 'informal' labour market for women. "

Our motorbike club is informal.

"Hi" is an informal way of saying hello.

Once you have reached informal agreement, you should enter into a contract with the other party.