The phrase "art tantamount" signifies that something is equivalent to or as important as a work of art. There are several synonyms for this phrase that can be used interchangeably in a sentence. These include "masterpiece," "gem," "treasure," "jewel," "prize," and "showpiece." Each of these words implies a level of excellence, uniqueness, and value associated with something deemed to be "art tantamount." Whether used in the context of a literary work, a painting, or any form of creative expression, these synonyms convey an appreciation for the skill and creativity involved in crafting something that is both meaningful and aesthetically pleasing.