not formal; casual in style or nature

अनौपचारिक

English Usage: They had an informal meeting at the coffee shop.

Hindi Usage: उन्होंने कैफे में एक अनौपचारिक बैठक की।

a casual or unofficial style or manner

अनौपचारिकता

English Usage: The invite had an air of informal about it.

Hindi Usage: निमंत्रण में अनौपचारिकता का एहसास था।