Disgruntled

[Becky]

A person who is in a state of [unhappiness]; usually unhappy with their current lifestyle. Can also represent an individualwho generally thinks [everything sucks]. Note the elderly woman reading a newspaper in [Queens] I Want to Break Free video for a clear example.

[Britney]

Angry or dissatisfied.

[Luis Fok]

being both [pissed off] and [startled] and [sad] and confused at the same time; just an extreme of all three

[Justin Bieber]

[The feeling] of a little [stress] and [a little bit] of anger combined

[Sarah]

A grunting state of agitated displeasure assumed by [egocentric] engineer or sports types who are quite fond of getting their own way, by brain or by [brawn], and find themselves [powerless] to get what they want. It is generally saved to manipulate lesser minds into capitulating to their will. Those who challenge them find this tactic pointless and extremely amusing.

[Michiko]

[A word] that means [angry] or dissatisfied, it can also be used to accurately describe [Geoff]

[Jason Yan]

An active-duty member of the US military i.e. Marines/Army, who is [fed up] with all [the bullshit] that happens in their daily life, ex: being treated like a child, going to the field, having to sit through safety [briefs], etc etc.

[Monty]

unhappy, annoyed, and disappointed about something: