FESTER Meaning of FESTER in English I . v. n. 1.Rankle, corrupt, suppurate, ulcerate.2.Become malignant, grow virulent or violent, rankle. II . v. n. 1.Pustule, sore, abscess, imposthume, gathering.2.Festering, rankling. Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012