"All wound up" is a common phrase used to describe someone who is nervous, anxious, or tense. There are several synonyms for this phrase that can be used interchangeably. One might say that someone is "worked up," "stressed out," "tightly wound," or "frazzled." Other related phrases include "on edge," "in a state," "jittery," and "nervy." Each of these phrases can be used to convey the same general idea of a person who is feeling uneasy or overwhelmed. Regardless of which synonym is used, it's important to pay attention to the specific context and tone in which it is used, as some phrases may have a more negative connotation than others.