FRET is a term used to describe a range of negative emotions, such as anger, sadness, and anxiety. GRIEVE (6 letters) is to feel deep sorrow or distress, AGITATE (7 letters) is to disturb or trouble, PIQUE (5 letters) is to cause resentment or annoyance, VEX (3 letters) is to IRRITATE or annoy, IRRITATE (8 letters) is to provoke or annoy, RIFFLE (6 letters) is to move quickly through something, RANKLE (6 letters) is to cause resentment or bitterness, FUME (4 letters) is to be filled with anger, RUB (3 letters) is to IRRITATE or annoy, PEEVE (5 letters) is to IRRITATE or annoy, ROIL (4 letters) is to make something turbulent or agitated, STEW (4 letters) is to be in a state of agitation, CHAFE (5 letters) is to cause irritation or discomfort, ERODE (5 letters) is to wear away gradually, WORRY (5 letters) is to experience anxiety or concern, REPINE (6 letters) is to express discontent or dissatisfaction, and sweatit (7 letters) is to be in a state of agitation or distress. All of these words are related to the term FRET, which is used to describe a range of negative emotions.