The antonyms for the word "art big" are "unsophisticated" and "small." Unsophisticated refers to something that lacks refinement or cultural awareness, while small suggests that something is the opposite of big or grand in scale. Other antonyms for "art big" may include "ugly," "poorly made," and "awkward." These words describe objects or works of art that lack aesthetic appeal or technical finesse. In contrast, words like "beautiful," "elegant," and "masterful" would be synonyms for "art big," describing works of art that are skillfully crafted and aesthetically pleasing.