Answer: ulcerate

AnswerCrossword Clue
ULCERATEFester
ULCERATECause a corrupting influence
ULCERATEDevelop sores
ulcerateto cause an ulcer on or in
ulcerateto form an ulcer; become ulcerous
ulcerateaffect with or as if with an ulcer
ulcerateto affect with a type of lesion, also ULCER
ulcerateto become affected with or as if with an ulcer