Long-term is an adjective that describes something that is enduring or continuing over a substantial period of time. There are numerous synonyms for the word long-term, including persistent, extended, prolonged, sustained, durable, and enduring. Other terms that may be used to convey a similar meaning include long-lasting, permanent, ongoing, continual, regular, and consistent. Whether you are discussing a project, goal, or investment, using these synonyms can give your communication added clarity and precision. By choosing the synonym that best fits your context, you can convey the intended meaning in a more concise and effective way.