multitudinous

adjective
UK /ˌmʌl.tɪˈtjuː.dɪ.nəs/
US /ˌmʌl.təˈtuː.dɪ.nəs/

There are so many of something that it is hard to count them all.

The beach was covered with a multitudinous crowd of tiny crabs.


OTHER MEANINGS

2. Very great in number or amount.

She had a multitudinous list of chores to finish before dinner.

3. Made up of many different parts or kinds.

The city's multitudinous sounds kept him awake all night.

4. Large and crowded, like a big group of people.

A multitudinous audience filled the stadium for the final game.