Definition of "uncountably" in English

adverb

1. 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.

2. (grammar) In an uncountable fashion.

   • Some nouns can be used both countably and uncountably.

3. (mathematics) In a way that is incapable of being put into one-to-one correspondence with the natural numbers or any subset thereof.