Meaning & Definition
adjective
Too many to be counted; innumerable.
There are countless stars in the night sky.
So many that it is impossible or impractical to count them.
She has countless friends on social media.
Vast in number or variety.
He has faced countless challenges throughout his career.
Used to emphasize the large number of something.
The museum has countless artifacts from ancient civilizations.
Etymology
Middle English, from count + -less
Common Phrases and Expressions
countless times:
A phrase indicating a very large, often uncountable number of occurrences.
countless opportunities:
Refers to a vast number of potential chances or possibilities.
Slang Meanings
A large, sometimes exaggerated number.
I've told you countless times to clean your room!
Unbelievably many.
There were countless fans at the concert.