[adj] undergoing no change when acted upon; "entirely unaffected by each other's writings"; "fibers remained apparently unaffected by the treatment" [adj] free of artificiality; sincere and genuine; "an unaffected grace"
immune, lifelike, natural, superior(p), unimpressed, uninfluenced, unmannered, unselfconscious, unstilted, unswayed, untouched
affected, unnatural