Squick is a slang term that refers to the feeling of disgust, discomfort, or revulsion. There are several synonyms for squick that can be used to express the same sentiment. Examples of such terms include ick, yuck, gross, nauseating, sickening, off-putting, creepy, repulsive, revolting, etc. These words can be used interchangeably depending on the situation or the context in which they are used. It is important to note that the use of slang or informal language should be avoided in formal settings or professional communications as it can be perceived as unprofessional.