Longman Dictionary of Contemporary English homepage

lengthy

 adjective
     
length‧y comparative lengthier, superlative lengthiest [usually before noun]
1 continuing for a long time, often too long [≠ brief]:
A lengthy period of training is required.
An accident is causing some lengthy delays.
2 a speech, piece of writing etc that is lengthy is long and often contains too many details:
a lengthy report
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
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