What is a group of flies called?

Collective Noun for Flies. The collective noun for flies is the word you would use to describe a group of flies.

We have identified the following word(s) that you could call a group of flies:

business
cloud
swarm

Used in a sentence, you could say "Look at the business of flies", where "business" is the collective noun that means group.

As you can see, you simply substitute the word "group" with one of the collective nouns on our list above when describing a group of flies.

What is a group of animals called?
Collective nouns are also called "terms of venery". Go here to look up another animal.

What is a group of fox called?
Now you know what a group of flies is called. Go here for the next animal on our list.