When something is "not recognizable," it means that it cannot be identified or is unfamiliar. Some synonyms for this phrase include unidentifiable, anonymous, unfamiliar, indistinctive, and vague. Other synonyms to consider are anonymous, inconspicuous, imperceptible, unremarkable, and unmemorable. Depending on the context, these synonyms can be used to convey various shades of meaning. For example, "unremarkable" might be used to describe something that is just ordinary, while "vague" might be used to describe something that is difficult to pin down or describe. Whatever the synonym, the point is clear: when something is not recognizable, it is hard to identify, distinguish, or remember.