The term 'SERIES ENDER' can refer to a variety of different crossword solutions, including ZEE (3 letters), OMEGA (5 letters), NTH (3 letters), ETC (3 letters), ETAL (4 letters), and FINALE (6 letters). ZEE is a Hebrew letter that is the last letter of the Hebrew alphabet. OMEGA is the last letter of the Greek alphabet and is often used to represent the END of something. NTH is an abbreviation for 'NTH degree, ' which is a phrase used to describe the highest level of something. ETC is an abbreviation for 'et cetera, ' which is Latin for 'and so forth.' ETAL is an abbreviation for 'et alii, ' which is Latin for 'and others.' Finally, FINALE is a French word meaning 'END' or 'CONCLUSION.' All of these words can be used to refer to the END of a series or sequence.