- Too many to be counted (either by reason of being infinite or for practical constraints).
- The stars in the sky are uncountably many. Even a lifetime would not suffice to number them all.
- (grammar) In an uncountable fashion.
- Some nouns can be used both countably and uncountably.
- (mathematics) In a way that is incapable of being put into one-to-one correspondence with the natural numbers or any subset thereof.
- Used as a general intensifier of amounts and quantities; very; much