| 1. | to form pus; generate purulent matter; suppurate. |
| 2. | to cause ulceration, as a foreign body in the flesh. |
| 3. | to putrefy or rot. |
| 4. | to rankle, as a feeling of resentment. |
| 5. | to cause to rankle: Malice festered his spirit. |
| 6. | an ulcer; a rankling sore. |
| 7. | a small, purulent, superficial sore. |
fester fes·ter (fěs'tər)
v. fes·tered, fes·ter·ing, fes·ters
To ulcerate.
To form pus; putrefy.