The difference between Abrupt and Sudden
When used as nouns, abrupt means something which is abrupt, whereas sudden means an unexpected occurrence.
When used as adjectives, abrupt means broken away (from restraint), whereas sudden means happening quickly and with little or no warning.
Abrupt is also verb with the meaning: to tear off or asunder.
Sudden is also adverb with the meaning: suddenly.
check bellow for the other definitions of Abrupt and Sudden
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Abrupt as an adjective (obsolete, rare):
Broken away (from restraint).
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Abrupt as an adjective:
Without notice to prepare the mind for the event; sudden; hasty; unceremonious.
Examples:
"The party came to an abrupt end when the parents of our host arrived."
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Abrupt as an adjective:
Curt in manner.
Examples:
"synonyms: brusque rude unciviimpolite"
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Abrupt as an adjective:
Having sudden transitions from one subject or state to another; unconnected; disjointed.
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Abrupt as an adjective (obsolete):
Broken off.
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Abrupt as an adjective:
Extremely steep or craggy as if broken up; precipitous.
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Abrupt as an adjective (botany):
Suddenly terminating, as if cut off; truncate.
Examples:
"rfquotek en"
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Abrupt as a verb (transitive, archaic):
To tear off or asunder.
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Abrupt as a verb:
To interrupt suddenly.
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Abrupt as a noun (poetic):
Something which is abrupt; an abyss.
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Sudden as an adjective:
Happening quickly and with little or no warning.
Examples:
"The sudden drop in temperature left everyone cold and confused."
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Sudden as an adjective (obsolete):
Hastily prepared or employed; quick; rapid.
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Sudden as an adjective (obsolete):
Hasty; violent; rash; precipitate.
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Sudden as an adverb (poetic):
Suddenly.
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Sudden as a noun (obsolete):
An unexpected occurrence; a surprise.