- to form pus; generate purulent matter; suppurate.
- to cause ulceration, as a foreign body in the flesh.
- to putrefy or rot.
- to rankle, as a feeling of resentment.
- to cause to rankle: Malice festered his spirit.
- an ulcer; a rankling sore.
- a small, purulent, superficial sore.
- to form or cause to form pus
- to become rotten; decay
- to become or cause to become bitter, irritated, etc, esp over a long period of time; rankle
- to be idle or inactive
- a small ulcer or sore containing pus
