unaffected -- (undergoing no change when acted upon; "entirely unaffected by each other's writings"; "fibers remained apparently unaffected by the treatment")
insensible, unaffected -- (unaware of or indifferent to; "insensible to the suffering around him")
unmoved, unaffected, untouched -- (emotionally unmoved; "always appeared completely unmoved and imperturbable")
unaffected -- (free of artificiality; sincere and genuine; "an unaffected grace")