Pipsqueak (noun)

1. A small or insignificant person or thing.
2. A person who is regarded as unimportant or worthless.

Origin:

Of unknown origin.

Examples:

1. She had never paid much attention to the pipsqueaks in her life.
2. He felt like a pipsqueak compared to the powerful men in the room.
3. The company was once a major player, but now it was reduced to a pipsqueak.
4. He was a pipsqueak of a man, easily overlooked.
5. The new policy would benefit everyone, not just the pipsqueaks.