Antonyms of adj resentful

1 sense of resentful

Sense 1
resentful (vs. unresentful) -- (full of or marked by resentment or indignant ill will; "resentful at the way he was treated"; "a sullen resentful attitude")

unresentful (vs. resentful) -- (not resentful; "completely unresentful and forgiving")
        => unbitter -- (having or showing no resentment or desire for revenge; "remarkably unbitter toward her captors")

Similarity of adj resentful

1 sense of resentful

Sense 1
resentful (vs. unresentful) -- (full of or marked by resentment or indignant ill will; "resentful at the way he was treated"; "a sullen resentful attitude")
       => acrimonious, bitter -- (marked by strong resentment or cynicism; "an acrimonious dispute"; "bitter about the divorce")
       => rancorous -- (showing deep-seated resentment; "preserve...from rancourous envy of the rich"- Aldous Huxley)