a transient madness, acerbity, acid, acidity, acidulousness, acrimony, algesia, allergy, anaphylaxis, anger, angriness, animosity, animus, asperity, bad blood, bile, bitter feeling, bitter resentment, bitterness, bitterness of spirit, causticity, choler, considerateness, delicacy, empathy, enragement, exquisiteness, festering, feud, fineness, gall, gnashing of teeth, grapes of wrath, hard feelings, heartburning, heat, hyperesthesia, hyperpathia, hypersensitivity, identification, ill blood, ill feeling, ill will, inflammation, infuriation, irateness, ire, irritability, irritation, mad, nervousness, oversensibility, oversensitiveness, overtenderness, passibility, perceptiveness, perceptivity, photophobia, prickliness, rancor, rankling, responsiveness, saeva indignatio, sensitiveness, sensitivity, sensitization, slow burn, sore, sore spot, sourness, spleen, supersensitivity, sympathy, tact, tactfulness, tenderness, tetchiness, thin skin, ticklishness, touchiness, vendetta, venom, vials of wrath, virulence, vitriol, wrath, wrathfulness