Question: Terminal

Answer: End of the series

Question: conterminous ( con=with, together & ous=full of )

Answer: Having common boundary; bordering; contiguous

Question: exterminate ( ex=out, away from& ate=to make)

Answer: To destroy and get rid of entirely ; as by killing ; wipe out; annihilate

Question: term

Answer: boundary, limit, end

Question: determine

Answer: to set limits

Question: terminate

Answer: to end, to close, to limit

Question: termination

Answer: the act of ending something