(grammar) The form of an adjective that expresses which of several items has the highest degree of the quality expressed by the adjective; in English, formed by appending "-est" to the end of the adjective (for some short adjectives only) or putting "most" before it.
(informal) An adjective used to praise something exceptional.
“The superbness of her performance left the audience in awe.”
“The painting's superbness was evident in its intricate brushstrokes and vibrant colors, showcasing the artist's undeniable talent and capturing the viewer's attention.”
“In addition to the superbness of its content, the quality of the book itself is also high.”