The term "art derelict" refers to a neglected or abandoned artwork. The antonyms for this phrase would indicate the opposite - art that is well-maintained, popular, or esteemed. Words that could be used as antonyms for "art derelict" include "valuable," "prized," "sought-after," "respected," and "cherished." Artworks that are well-maintained and in good condition could be described as "pristine," while popular or well-known pieces might be termed "famous" or "iconic." Beyond the condition or popularity of an artwork, other antonyms could refer to the value, such as "treasured," "luxurious," or "premium." All of these terms contrast the neglected or abandoned status of "art derelict.