The term 'in a lively manner' can be described using four different words, all of which have six or seven letters. The first word is 'vivace, ' which is an Italian musical term meaning 'lively and fast.' The second word is 'GAILY, ' which means 'in a cheerful and light-hearted manner.' The third word is 'BRISKLY, ' which means 'in an energetic and active way.' Finally, the fourth word is 'crisply, ' which means 'in a sharp and precise manner.' All four words describe the same concept of doing something in a lively manner.