abrupt

[uh-bruhpt]
adjective
1.
sudden or unexpected: an abrupt departure.
2.
curt or brusque in speech, manner, etc.: an abrupt reply.
3.
terminating or changing suddenly: an abrupt turn in a road.
4.
having many sudden changes from one subject to another; lacking in continuity or smoothness: an abrupt writing style.
5.
steep; precipitous: an abrupt descent.
6.
Botany, truncate ( def 4 ).

Origin:
1575–85; < Latin abruptus broken off (past participle of abrumpere), equivalent to ab- ab- + -rup- break + -tus past participle suffix

abruptly, adverb
abruptness, noun
unabruptly, adverb


1, 3. quick, sharp. See sudden. 2. short, hurried, hasty, blunt. 4. discontinuous, broken, uneven.


1, 3. gradual. 2. deliberate; patient, courteous.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
abrupt (əˈbrʌpt)
 
adj
1.  sudden; unexpected
2.  brusque or brief in speech, manner, etc; curt
3.  (of a style of writing or speaking) making sharp transitions from one subject to another; disconnected
4.  precipitous; steep
5.  botany shaped as though a part has been cut off; truncate
6.  geology (of strata) cropping out suddenly
 
[C16: from Latin abruptus broken off, from ab-1 + rumpere to break]
 
ab'ruptly
 
adv
 
ab'ruptness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

abrupt
1580s, from L. abruptus "broken off, precipitous, disconnected," pp. of abrumpere "break off," from ab- "off" + rumpere "break" (see rupture). Related: Abruptly.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The hallmark would be the scale and abruptness of change in any given ecosystem.
After these areas of his body, however, the difficulty increased with the
  abruptness of a coastal shelf.
The abruptness of this departure was never equalled in other cars of the period.
Their dialogue-what there is of it-is usually in monotones, and there is a
  monotony in the abruptness of the cutting.
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