► long continuing for a long time: · The film was very long.· There has been a long period without rain.
► lengthy continuing for a long time, especially longer than you want or expect: · Drivers face lengthy delays on all roads out of the city.· Police are going through the lengthy process of re-examining all the evidence.· He faces a lengthy prison sentence.
► long-running [only before noun] continuing for a long time – used especially about disputes, campaigns, or shows: · He has been involved in a long-running dispute with his neighbour.· The programme is one of the longest-running series on television.· a long-running campaign to prevent the airport from being built
► long-lasting continuing for a long time – used especially about effects or relationships: · Stress can have long-lasting effects.· While at the school, she made many long-lasting friendships.
► protracted formal continuing for a long time, especially an unusually long time: · Despite protracted negotiations, they were unable to reach an agreement.· The couple have been involved in a protracted battle for custody of their children.
► prolonged continuing for a long time, especially longer than expected, or longer in a way that makes a situation worse: · He returned to work after a prolonged absence.· Studies have linked prolonged use of the drug to cancer.· a prolonged period of economic decline
► extended [only before noun] continuing for a long time – used especially about visits, trips, breaks etc that last longer than was planned: · an extended stay in hospital· He took an extended break from work after his father died.· She didn’t like being away from home for extended periods.
► lasting [only before noun] strong enough or great enough to continue for a long time: · The negotiations were aimed at achieving a lasting peace.· This affair has done lasting damage to the president’s credibility.· The book left a lasting impression on me.
► enduring continuing for a long time – used especially about memories, influences, or feelings of liking someone or something: · One of my most enduring memories is of going on holiday to France with my parents.· the enduring appeal of Conan Doyle’s stories· his enduring love for Ireland
► marathon [only before noun] continuing for a very long time and needing a lot of energy, patience, or determination: · It was a marathon session of talks which continued until 3 am.· He arrived after a marathon journey across Europe.