intransitive. To speak ill of a person; to blaspheme; to speak abusively, slanderously, or scornfully. Obsolete.

intransitive or absol. To denounce or slander a person; to make accusations, cast aspersions.

intransitive. To speak ill, inveigh; to utter slander or abuse. Also with against. Obsolete.

intransitive or absol. To speak or utter slanders.

intransitive. To make libellous accusations or statements; to spread defamation. Const. against, on; by, of (Sc.). Obsolete.

absol.

intransitive (absol.) To utter calumnies.

intransitive. To deal in libels, to practice slander.

intransitive. To utter malicious accusations; to slander, calumniate. Obsolete.

To give an evil report (of).

absol. and intransitive. To talk scandal.

to sling (also fling, throw) mud: to make disparaging or malicious allegations or criticisms, now esp. in relation to conduct in public life.

To calumniate.

intransitive. To curse or swear; to use coarse or obscene language. Also: to make insulting, disparaging, or slanderous remarks (often with against).