Fester

Part of speech: noun (n.)

1. A small sore which becomes inflamed and discharge corrupt matter; a pustule.

2. A festering or rankling. The fester of the chain their necks. I. Taylor.

Part of speech: verb (v.)

1. To generate pus; to become imflamed and suppurate; as, a sore or a wound festers. Wounds immedicable Rankle, and fester, and gangrene. Milton. Unkindness may give a wound that shall bleed and smart, but it is treachery that makes it fester. South. Hatred . . . festered in the hearts of the children of the soil. Macaulay.

2. To be inflamed; to grow virulent, or malignant; to grow in intensity; to rankle.

Part of speech: verb (v.)

To cause to fester or rankle. For which I burnt in inward, swelt'ring hate, And fstered ranking malice in my breast. Marston.