Longman Dictionary of Contemporary English homepage

marathon

2 adjective
     
marathon2 [only before noun]
a marathon event continues for a long time and needs a lot of energy, patience, or determination:
a marathon round of negotiations
WORD FOCUS: long WORD FOCUS: long
continuing for a long time: lengthy
continuing for much too long: interminable, marathon, endless, long-winded, long-drawn-out, protracted
continuing for a long time and not changing: permanent, lasting, lifelong
when feelings last for a long time: lingering, abiding, enduring, lasting

➔ See also long
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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