adj
countless
KOWNT-luhs
adj
1
Too many to count; a very large, unspecified number.
"She had answered countless emails before lunch."
"Countless volunteers showed up to help after the storm."
How to Use Countless
Learner’s notesIn plain EnglishSo many that you couldn't possibly count them all.
Common pairings
countless times
countless hours
countless occasions
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She had answered _____ emails before lunch.
Etymology
From count + -less.