When expressing dissatisfaction with a situation or object, sometimes it's helpful to have synonyms for "is no good" at your disposal. Some alternatives might include "isn't satisfactory," "isn't up to par," or "is subpar." Other phrases that could be used to convey disappointment might be "doesn't meet expectations," "leaves something to be desired," or "falls short." Additionally, you might consider using more nuanced language to describe why a particular thing is not desirable, such as "is ineffective," "is impractical," or "isn't fit for purpose." By having a range of options for expressing disappointment, you can more effectively communicate your thoughts and feelings in a variety of situations.