Creepy is often used to describe something that is unsettling or eerie. However, there are several synonyms that can also convey a similar unsettling feeling. One such word is "spooky," which suggests an eerie feeling that is often associated with the supernatural. Another alternative is "ghastly," which has connotations of horror and terror. "Freaky" is another commonly used synonym which conveys a sense of something odd or unusual, while "weird" can also be used to describe things that are unsettling or strange. "Unsettling" itself is a more neutral term that can also be used to describe something that makes one feel uneasy or uncomfortable.