Answer: curser

AnswerCrossword Clue
CURSERFoul-mouth
CURSERLenny Bruce, famously
CURSERPerson swearing
CURSERFoul-mouthed one
curserprofane or obscene word
curserto swear at
curserto swear profanely
curserwish that evil or misfortune befall someone or something
cursergreat evil or misfortune
curserto wish evil upon
curserone that curses (to invoke evil upon)
curserto afflict with evil