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decongest

[dee-kuh n-jest]
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verb (used with object)
  1. to diminish or end the congestion of.

Origin of decongest

1955–60; de- + congest, or by back formation from decongestant
Related formsde·con·ges·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
decongestion in Medicine

decongest

(dē′kən-jĕst)
v.
  1. To relieve congestion, such as of the sinuses.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.