Tenterhooks are a feeling of anxious uncertainty or suspense. There are several synonyms for this word that can be used to express this feeling. Some of the synonyms are anxiety, unease, nervousness, agitation, apprehension, fear, and trepidation. These words all convey the same general sense of being on edge, waiting for something to happen, and feeling uneasy about the outcome. Other synonyms for tenterhooks include suspense, tension, stress, and strain. These words are more specific in their meaning but still convey a general sense of discomfort or unease. Overall, these synonyms are great for expressing a sense of anxious anticipation about uncertain events.