Riveting refers to something that is fascinating, captivating, or engrossing. Antonyms for this word could include the terms bland, boring, dull, unexciting, or uneventful. These words are often used to describe situations or events that do not elicit much excitement or interest from individuals. While something that is riveting compels a person's attention, something that is dull or uneventful fails to do so. One could also use the word trivial as an antonym to riveting as it often implies a lack of importance or significance that fails to captivate an individual's attention or interest.