The quality of being kind
tenderness, good intentions, consideration, sympathy, sweetness, benevolence, generosity, helpfulness, kindheartedness, indulgence, delicacy, tact, benignity, mildness, courtesy, thoughtfulness, humanity, courteousness, understanding, solicitude, solicitousness, compassion, unselfishness, altruism, agreeableness, amicableness, commiseration, warmheartedness, softheartedness, politeness, kindliness, clemency, goodness, beneficence, philanthropy, charity, friendliness, good disposition, good nature, mercy, affection, loving-kindness, cordiality, amiability, forbearance, tolerance, graciousness, virtue; see also generosity 1, tolerance 1.
Antonyms brutality, cruelty, selfishness.
A kindly act
favor, service, good deed, good turn, benefit, act of kindness, relief, succor, charity, benevolence, philanthropy, boon, blessing, courtesy, kind office, bounty, benefaction, self-sacrifice, mercy, lift*, boost*, good lick*, break*; see also aid 1.
Antonyms transgression, injury*, wrong.