Forgiveness rhymes with:
aggressiveness, assertiveness, attentiveness, attractiveness, cohesiveness, combativeness, creativeness, decisiveness, defensiveness, distinctiveness, divisiveness, effectiveness, elusiveness, indecisiveness, ineffectiveness, inventiveness, permissiveness, persuasiveness, possessiveness, resistiveness, responsiveness, restiveness, restrictiveness, secretiveness, sensitiveness, suggestiveness, vindictiveness