A word for a feeling of frustration at the unexpected ineptness of others

Question

I've been trying to think of a word recently that would be used to describe the feeling of frustration or disappointment and annoyance or disgust at others directed especially towards their stupidity or incompetence, from the person's perspective, when the person was expecting more/for them to act differently or had high hopes in general. I'm trying to avoid the view of labeling the person as being overly arrogant thinking this way.

For instance, "What where they thinking?" the Hillary supporter exclaimed, filled with (insert word here)

Or

Indignant with his loss, the footballer sat in the changing room. Looking around, "I'm the only decent player on my team", he thought (insert word here)ly.

Answer 1

Exasperation captures the sense of feeling frustrated at the unexpected ineptness of others, especially when one fails repeatedly to get a purportedly obvious or simple point across.

Dictionary.com

exasperation: the state of being exasperated; irritation; extreme annoyance

Your example:

"What where they thinking?" the Hillary supporter exclaimed, filled with exasperation."

Answer 2

Disillusionment(also check 'disenchanted')

a feeling of disappointment resulting from the discovery that something is not as good as one believed it to be.

Disillusionment encompasses more of a feeling of being let down by someone than a feeling of disgust or annoyance.

Sour(adj.)

Noun:sourness Adverb: sourly

Feeling or expressing resentment, disappointment, or anger.

‘he gave her a sour look’

‘the meeting ended on a sour note’

Embitter

To embitter to make someone bitter, resentful, or angry. People are embittered by disappointing and unfair experiences.

Answer 3

Dismay (n.)

A feeling of unhappiness and disappointment:

Be filled with dismay Aid workers were said to have been filled with dismay by the appalling conditions that the refugees were living in.

In/with dismay The fans watched in/with dismay as their team lost 42–11.

To someone's dismay She discovered, to her dismay, that the paper was due a whole month earlier than she'd expected.
Cambridge

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For example, Ann Temple argued in the Daily Mail in 1941, 'You've got it wrong, Mr Bevin', women would have 'responded magnificently' to appeals to volunteer if they had been organised properly, but 'in this war the voluntary system was doomed to failure from the very start by a stupidity, tactlessness and incompetence that made women draw back in dismay'.
Penny Summerfield; Women Workers in the Second World War

Answer 4

chagrin

a feeling of vexation, marked by disappointment or humiliation.

(dictionary.com)

The humiliation part doesn't match, but the rest of it does.

Do use it as an adverb, you have to say "in chagrin."

Answer 5

Human

Typically we are witnessing the limits of our own independence and disappointed with intellectual compromises. " NON POTESTIS FIGERE STULTUS " ( can't fix stupid )