There are a variety of synonyms for the term "scary-looking." Some include intimidating, unsettling, alarming, unnerving, and frightening. Other options may include eerie, creepy, ominous, or foreboding. Each of these words conveys a sense of danger or unease, making them fitting for describing something that may cause fear or discomfort. Choosing the right synonym will depend on the context and intended tone of the writing, but no matter which term is selected, it is clear that the object in question is not likely to be considered approachable or inviting. Overall, these synonyms offer a range of options for describing something that has the potential to frighten or unnerve.