To Talk Badly About Someone; to Knock Someone
This page is the CodyCross answer for the clue below from Inventions, Group 43, Puzzle 3.
Question is: To Talk Badly About Someone; to Knock Someone
and the answer is: BADMOUTH
Word Meaning:
BADMOUTH — (informal, transitive) To criticize or malign, especially unfairly or spitefully.
Definitions from Wiktionary.