Squiggle is more common in casual conversation than formal writing.

Informal Use

A squiggle doesn't have a specific shape, it's random and unpredictable.

Not Exact

Squiggles can express confusion, chaos, or a playful mood in visuals.

Expressive

When someone squiggles, it implies fast or careless writing or drawing.

Quick Writing

People often squiggle signatures on informal documents or when in a hurry.

Casual Signing

Squiggle as a verb often results in text that is not meant to be read, just recognized.

Not for Reading

 we were surprised by how much it stuck. It seemed to give people something that perhaps they didn't even know that they needed, a way of describing both their experiences and their aspirations. Someone even told us that they took our book, which has a big squiggle on the front of it, into a job interview,

Sarah Ellis and Helen...

 that are strong enough not only to hold up a world that is completely invented by the author, but also to change the reader's perspective on the real world that resumes only when the final squiggle is reached? I'm not sure anyone knows the answer to that question,

How to build a fictional...

 scientists and historians they call themselves first sounds and they figured out how to turn that squiggle into something that could be played back and here is the first sound that has ever been recorded by humanity