v.溃烂；化脓；恶化

n.脓疮；溃烂

A dirty wound will probably fester. 一个弄脏了的伤口,可能会化脓。

It's lucky that the wound did not fester. 幸好伤口没有化脓。

The crisis will fester. 危机将会进一步恶化。

A broken bone can heal, but the wound a word opens can fester forever. 骨头断了可以治愈好，但是言语造成的伤害将会一直恶化下去。