As you can see, ladies and gentlemen, the guests were seated very informally around this oval table, which would add to the relaxed atmosphere.
出自-2013年12月听力原文
since he began to informally announce the network at farming conferences and on social media, he's received a steady stream of inquiries from interested farmers.
2019年12月六级真题(第三套)阅读 Section B
柯林斯高阶英汉双解学习词典释义
ADJ-GRADED
(言辞或行为)非正式的,亲切随便的
Informal speech or behaviour is relaxed and friendly rather than serious, very correct, or official.