Art in operation is a term that refers to the application of artistic skills to practical work or activities. Antonyms for this term would be words that imply the absence of art or creativity in work. Examples of antonyms for art in operation include ordinary, routine, mechanical, monotonous, and uncreative. These terms suggest a lack of imagination or originality in the execution of tasks. It connotes a sense of dullness and uninspired activity. However, it is important to note that while the antonyms for art in operation may signify the absence of creativity, it does not necessarily indicate a lack of efficiency or productivity.