Onerous -
Oppressively heavy or troublesome, often involving responsibility or duty.
The manager gave him an onerous task that took the entire week to finish, working late into each night.
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nounverb noun
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Breach -
An act of breaking a law, rule, or agreement.
I didn't trust him after he shared my secret, in what I regarded as a breach of trust.
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adjective
obese -
Extremely fat in a way that is dangerous for health
The WHO says that obesity has reached epidemic proportions globally, with at least 2.8 million people dying each year as a result of being overweight or obese.
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noun
inferno -
A large fire that is dangerously out of control
The raging inferno that was consuming the forest would be a big challenge for the firefighters.
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adjective
fatal -
Something that can cause death.
Since Martha was a diabetic, she knew that eating that piece of strawberry shortcake could be a fatal mistake.
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noxious -
Poisonous or very harmful.
The subculture that Eddie was a member of was a noxious blend of drugs, music, and anarchy.
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verb
loom -
To appear as a dangerous event that might happen in the near future
Joe looked at the economic data, and could sense a recession looming in the near future.
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volatile -
An unstable situation that is likely to get worse quickly
Victor realized that he had created a volatile chemical that could easily explode if he wasn't very careful
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noun
plight -
A dangerous, difficult, or otherwise unfortunate situation
The plight of the jobless is slightly improved when they receive temporary unemployment benefits.
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Deadline -
A specific time or date by which something must be completed.
She worked well under pressure and always met every deadline on time.
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Outbreak -
A sudden start or increase of something harmful, especially a disease or conflict.
The outbreak of the flu led to school closures across the region.
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Deluge -
A severe flood or overwhelming rush of water.
The heavy rain turned into a deluge, submerging cars and streets