Fret, v. i. 1. To be worn away; to chafe; to fray; as, a wristband frets on the edges.
2. To eat in; to make way by corrosion.
Many wheals arose, and fretted one into another with great excoriation. Wiseman.
3. To be agitated; to be in violent commotion; to rankle; as, rancor frets in the malignant breast.
4. To be vexed; to be chafed or irritated; to be angry; to utter peevish expressions.
He frets, he fumes, he stares, he stamps the ground. Dryden.