"Have had it up to here" is a common phrase used to express extreme frustration with a person, situation, or thing. In expressing this emotion, people turn to various synonyms to communicate their feelings. Some of the synonyms used for this phrase include "fed up," "exasperated," "annoyed," "irritated," "disgusted," "disappointed," and "exasperated." These synonyms are often used interchangeably with the phrase, allowing speakers to convey their negative emotions succinctly and understandably. In any situation where one is feeling overwhelmed, using these synonyms can be useful in conveying one's frustration effectively.