Macaronic is an adjective that describes a text or speech which combines two or more languages or dialects. Macaronic can be considered as an antonym of monolingual. Monolingual refers to the use of only one language in speech or writing. Another antonym for macaronic could be the word "unilingual," which means using or speaking only one language. "Pure" and "homogeneous" could also be considered antonyms for macaronic as they represent concepts opposite to the blending of multiple linguistic elements. "Regular" and "conventional" could be considered antonyms too because macaronic speech or writing often breaks regular linguistic conventions.
Antonym of the day