adj
endless
EHND-lihs
adj
1
Having no end; going on forever or seeming to.
"The desert stretched out in endless dunes."
"It felt like an endless wait at the airport."
How to Use Endless
Learner’s notesIn plain EnglishWithout limit — either literally never-ending, or just extremely long or numerous.
Common pairings
endless possibilities
endless supply
endless list
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The desert stretched out in _____ dunes.
Etymology
From Old English endelēas, formed from end plus the suffix -less ("without").