informaladjectiveuk /ɪnˈfɔː.məl/ us /-ˈfɔːr-/
- What was once an informal event has now become institutionalized.
- People chatting at a party will usually be talking in an informal register.
- Many informal expressions are gaining currency in serious newspapers.
- The party itself was a fairly informal affair.
- They started as informal gatherings but they have become increasingly formalized in the last few years.