informal
/ɪnˈfɔrməl/
adjective
- Relaxed, friendly, or casual; not formal or official.
- The dress code for the party is informal, so wear jeans.
- We had an informal meeting in the coffee shop.
- He used informal language when talking to his friends.
- Not following the official rules or procedures.
- The group operates as an informal network of volunteers.
- An informal survey showed that most people preferred the new design.
- They reached an informal agreement without signing a contract.
Synonyms