Antonyms are words that have opposite meanings to each other. In the case of "art hot trail," some antonyms could be "plain," "cold," and "obscure." "Plain" refers to something lacking in visual interest or decoration, the exact opposite of art. "Cold" denotes an absence of warmth or emotional expression, which is the opposite of the passion and creativity often associated with art. Lastly, "obscure" conveys a sense of being unclear, hidden, or difficult to understand, which contrasts with the clear and expressive nature of art that often leaves a trail of inspiration behind for others to follow.