* No strict rules: It implies a lack of formality, like a friendly conversation instead of a formal meeting.
* Personal and friendly: It can suggest a personal touch or a more relaxed tone.
* Not official: It often indicates something that is not part of an official process or procedure.
Examples:
* "We informally agreed to meet next week." (No written contract or official agreement).
* "He gave me some informal advice." (Not professional or expert advice).
* "The party was a very informal affair." (No dress code or strict rules).
Opposite:
The opposite of informal is formal, which suggests a more official, structured, and serious approach.