Respuesta :

Answer:

I would say informal but i don't know the answer choices

Explanation:

Antonyms for “casual” include:

• careful

• concerned

• premeditated (preplanned)

All of these words describe the opposite of what it means to be casual as an adjective. As an adjective, the word “casual” refers to things such as unconcern, indifference, procrastination, unpremeditated attitudes.