Nonterminating is a word used to describe something that doesn't come to an end. However, there are various synonyms you can use to convey the same meaning. One such word is perpetual, meaning lasting indefinitely or never coming to an end. Endless, ceaseless, uninterrupted, and continuous, are some other synonyms that can be used to describe nonterminating things. In some contexts, the words eternal and immortal could also be used interchangeably with nonterminating, indicating that something is infinite or everlasting. Whatever the context, it's essential to choose the right words, and synonyms, that can convey your intended meaning clearly and accurately.