Antonyms of adj vengeful

1 sense of vengeful

Sense 1
revengeful, vindictive, vengeful -- (disposed to seek revenge or intended for revenge; "more vindictive than jealous love"- Shakespeare; "punishments...essentially vindictive in their nature"- M.R.Cohen)

INDIRECT (VIA unforgiving) -> forgiving -- (inclined or able to forgive and show mercy; "a kindly forgiving nature"; "a forgiving embrace to the naughty child")

Similarity of adj vengeful

1 sense of vengeful

Sense 1
revengeful, vindictive, vengeful -- (disposed to seek revenge or intended for revenge; "more vindictive than jealous love"- Shakespeare; "punishments...essentially vindictive in their nature"- M.R.Cohen)
       => unforgiving (vs. forgiving) -- (unwilling or unable to forgive or show mercy; "a surly unforgiving old woman")