disgruntled
adj.adj. unhappy, annoyed, and disappointed because things didn't go the way you wanted. You often use this to describe someone who is not satisfied with their job or a service.
adj. dissatisfied, annoyed, and resentful, especially regarding a perceived lack of fair treatment. Often used predicatively after linking verbs such as 'remain' or 'become'.
The disgruntled customer demanded a full refund.
After the company cancelled the holiday bonuses, several disgruntled employees began looking for new jobs.
The management team struggled to address the concerns of a disgruntled minority whose vocal opposition threatened to derail the entire restructuring process.
From disgruntle + -ed (suffix forming past tense and past participle forms of verbs).
Commonly used as an adjective despite its origins as a past participle; frequently appears before nouns like 'employee', 'customer', or 'voter'.