disgruntled
adjective
UK/dɪsˈɡrʌn.tᵊld/
US/dɪsˈɡrʌn.t̬ᵊld/
Definitions of disgruntled adjective
Feeling or expressing dissatisfaction, annoyance, or disappointment about something.
Many disgruntled customers voiced their displeasure with the new policy on social media.
He became increasingly disgruntled after failing to get the promotion.
A group of disgruntled shareholders demanded a change of CEO.