When describing something that isn't particularly exciting, there are a variety of synonyms that can be used instead of saying it is a bit boring. Some alternatives include mundane, lackluster, uneventful, tedious, unremarkable, unexciting, drab, humdrum, monotonous, and uninspiring. Each of these options conveys a slightly different nuance, but they all share the common trait of invoking a feeling of dullness or tedium. Using these synonyms can help add variety to your writing or speech, and can help you better communicate your thoughts and feelings about the subject in question.