v.潰爛；化膿；惡化
n.膿瘡；潰爛
A dirty wound will probably fester. 一個弄臟了的傷口,可能會化膿。
It's lucky that the wound did not fester. 幸好傷口沒有化膿。
The crisis will fester. 危機將會進一步惡化。
