Tom looks disgruntled.

Tom seemed a little disgruntled.

I'd rather get the sack than not join the labour union," said the disgruntled worker.

She's disgruntled with her job.

Tom is disgruntled.

Yanni was murdered by a disgruntled employee.

We think a disgruntled employee was the one who planted the bomb.

How do you know that this wasn't done by a disgruntled employee?

The police suspect that a disgruntled former employee was the one who set the factory on fire.

Tom is the one who usually deals with disgruntled customers.