What are the opposite words for formal?

Formal is often used to describe a strict, proper, and professional approach towards a situation, environment, dress or behavior. Antonyms for formal could be informal or casual, which implies a relaxed, laid back, and comfortable atmosphere. Another opposite word for formal could be familiar, which refers to a friendly, warm, and informal approach towards others. On the other hand, colloquial could be used as an antonym of formal, which refers to the use of conversational and everyday language. In addition, slang could also be an antonym of formal, which has a more informal and sometimes even irreverent connotation. Finally, the word relaxed can also be mentioned as an antonym of formal.

Antonym of the day

leading the way
abandon, follow, misguide.