ˈ ̷ ̷| ̷ ̷ adjective
: given to the use of obscene, profane, or abusive language
so he went off cursing like the foulmouthed blackguard that he was — A. Conan Doyle
nowhere is cant at once so foulmouthed and so tight-laced as in the penny, twopenny, threepenny, or sixpenny press — Herbert Read