We promise not to ramble on endlessly about the origins of "interminable." The word was borrowed into English in the 15th century and descends from a Latin combination of the prefix in- ("not") and the verb terminare, meaning "to terminate" or "to limit." English speakers also coined the antonym terminable, meaning "capable of being brought to an end," from "terminare."
Yep and I thought that a stop for a cup of coffee was terminable when your cup was empty but it's not the case with this lot.