The term 'talkative one' can be described by a variety of words, all of which have 8 or more letters. The first word is 'PARAKEET', which is a type of small, brightly colored bird that is known for its ability to mimic human speech. The second word is 'MYNA', which is a type of bird native to South and Southeast Asia that is also known for its ability to mimic human speech. The third word is 'GASBAG', which is an informal term for someone who talks too much. The fourth word is 'GABBER', which is another informal term for someone who talks too much. The fifth word is 'WINDBAG', which is yet another informal term for someone who talks too much. The sixth and final word is 'BLATHERSKITE', which is an old-fashioned term for someone who talks too much.