Tom was a little disgruntled.

Tom seemed a little disgruntled.

Yanni was murdered by a disgruntled employee.

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

Tom had a pet-rabbit who always had a slightly peeved off, slightly disgruntled look about it.

She's disgruntled with her job.

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

Tom was disgruntled.

Tom looks disgruntled.

Disgruntled coworkers can be a big pain.