in
for
mal
形容词比较级
more informal
形容词最高级
most informal
1
非正式的, 轻松的
suitable for friendly, relaxed, casual, or unofficial occasions and situations
- The club had an informal dress code, so jeans and t-shirts were acceptable.
俱乐部有着非正式的着装规范，所以牛仔裤和T恤是可以接受的。
- The language in text messages is usually quite informal.
短信中的语言通常相当非正式。
- The music festival had an informal atmosphere where everyone could relax.
音乐节有一种非正式的氛围，每个人都可以放松。
- The party was an informal gathering of friends.
这个派对是朋友们的一次非正式聚会。
- The staff had an informal celebration to mark the end of the project.
员工们举行了一个非正式的庆祝活动来纪念项目的结束。
反义词：
2