bitterness - both of spirit and of speech: opposed to “kind.”
wrath - passion for a time: opposed to “tender-hearted.” Whence Bengel translates for “wrath,” harshness.
anger - lasting resentment: opposed to “forgiving one another.”
clamour - compared by Chrysostom to a horse carrying anger for its rider: “Bridle the horse, and you dismount its rider.” “Bitterness” begets “wrath”; “wrath,” “anger”; “anger,” “clamor”; and “clamor,” the more chronic “evil-speaking,” slander, insinuations, and surmises of evil. “Malice” is the secret root of all: “fires fed within, and not appearing to by-standers from without, are the most formidable” [Chrysostom].