The adjective long describes something that stretches over a large distance. If you're trying to avoid a prolonged visit with your crazy Aunt Martha, you might decide to take the long way to her house. Tired of saying long? This list of 100 vivid alternatives adds precision and style to your writing, including a few surprising picks you will want to steal. Definition of LONG in the Definitions.net dictionary. Meaning of LONG. What does LONG mean? Information and translations of LONG in the most comprehensive dictionary definitions resource on the web. LONG definition: 1. continuing for a large amount of time: 2. being a distance between two points that is more than…. Learn more. LONG Building Technologies provides building automation, security systems, commercial HVAC service and parts, as well as building analytics. long, yearn, hanker, pine, hunger, thirst mean to have a strong desire for something. long implies a wishing with one's whole heart and often a striving to attain. yearn suggests an eager, restless, or painful longing. hanker suggests the uneasy promptings of unsatisfied appetite or desire. Find 119 different ways to say LONG, along with antonyms, related words, and example sentences at Thesaurus.com.