Innumerable means too many to count. When something is innumerable, there are so many of them that counting would be impossible or would take forever.

Think about trying to count the stars visible in the night sky, or all the grains of sand on a beach. You could start counting, but you'd never finish. The stars are innumerable. The grains are innumerable. Scientists estimate there are about 200 billion trillion stars in the observable universe, but the exact number? Nobody knows, and nobody could count them all.

You might read about innumerable obstacles facing a hero in a story, meaning challenge after challenge keeps appearing. A teacher might say a curious student asks innumerable questions, meaning question after question without end. The word suggests abundance beyond counting, so vast that the specific number becomes meaningless.

When you encounter this word, picture something so vast and plentiful that even trying to count it would be futile.