Vera is actually a bit specific than dosa.
It is more personal. When a person deliberately does something specifically to INSULT, that is when one forms vera SPECIFICALLY for that person.
– When there is vera, the tendency is to retaliate at every opportunity, even with deliberate planning.
The best way to get rid of vera is to cultivate metta (or loving kindness) for that person.
– Since it is in a short verse (poem), “love” is not bad usage.