The antonyms for the word "eyeopeners" are quite diverse, and may depend on the context in which the word is being used. Some opposite terms could include "obscure," "hazy," "confusing" or "dull." Other antonyms may be "unremarkable," "mundane," "trivial" or "forgettable." Essentially, any word that implies a lack of excitement, insight, knowledge or inspiration could serve as an antonym for "eyeopeners." Whether discussing impactful experiences, thought-provoking ideas or interesting observations, the opposite of "eyeopeners" are things that leave us feeling uninspired, bored or unenlightened.