intr.v. slumped, slump·ing, slumps
1. To fall or sink heavily; collapse: She slumped, exhausted, onto the sofa.
2. To droop, as in sitting or standing; slouch.
a. To decline suddenly; fall off: Business slumped after the holidays.
b. To perform poorly or inadequately: The team has been slumping for a month.
a. To sink or settle, as into mud or slush.
b. To slide down or spread out thickly, as mud or fresh concrete.
1. The act or an instance of slumping.
2. A drooping or slouching posture: read defeat in the slump of his shoulders.
3. A sudden falling off or decline, as in activity, prices, or business: a stock market slump; a slump in farm prices.
4. An extended period of poor performance, especially in a sport or competitive activity: a slump in a batting average.
5. See grunt.
[Probably of Scandinavian origin; akin to Norwegian slumpa, to slump.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.