Similar word to temper:

atmosphere, attitude, attribute, aura, character, climate, complexion, condition, constitution, disposition, drift, frame of mind, humor, individualism, individuality, leaning, makeup, mind, mood, nature, orientation, outlook, peculiarity, personality, posture, property, quality, scene, soul, spirit, state, strain, style, temperament, tendency, tenor, thing, timbre, tone, trend, type, vein, way