Studying quantum mechanics was difficult for Tom because all it did was make him confused and flustered.
verb
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gnaw -
To cause continual distress or discomfort, often in a mental or emotional sense.
Doubts about her decision started to gnaw at her, making it hard to focus.
adjective
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agitated -
Emotionally upset or excited, especially due to worry or anger.
His voice grew louder and more agitated as he explained what he was feeling.
adjective
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unnerving -
Disturbing or upsetting in a way that makes someone feel anxious or afraid, sometimes leading to a loss of courage, confidence, or composure.
It was an unnerving experience walking alone in the empty and unused area under the highway.
adjective
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stickler -
Someone who is very particular or fussy about a specific thing.
She spends a lot of time cleaning the house, because she's a stickler for neatness and cleanliness.
adjective
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frenetic -
Fast and energetic in a rather wild and uncontrolled way
Every James Bond movie features a frenetic car chase that has the audience on the edge of their seats.
nounverb noun
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shock -
A jarring event that causes surprise, disbelief, or emotional disturbance.
The shock of the market crash left investors scrambling to adjust their portfolios.
verb
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falter -
To lose strength or momentum; to weaken or stumble; to hesitate in action, purpose, or speech.
Her voice began to falter as she delivered the emotional speech.
