en_tn_condensed/rom/03/14.md

Their mouths are full of cursing and bitterness

Here "mouths" is a metonym that represents the evil words of the people. The word "full" exaggerates how often people speak bitterly and curse. Alternate translation: "They often speak curses and cruel words" (See: rc://en/ta/man/jit/figs-metonymy and rc://en/ta/man/jit/figs-hyperbole)