a particular disease or malady.
the state or an instance of being sick; illness.
nausea; queasiness.

Origin of sickness

before 1000; Middle English siknesse, seknesse, Old English sēocnesse. See sick1, -ness Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sickness

Contemporary Examples of sickness

Historical Examples of sickness

British Dictionary definitions for sickness



an illness or disease
nausea or queasiness
the state or an instance of being sick
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sickness

Old English seocnes "sickness, disease; a disease;" see sick (adj.) and -ness.

Online Etymology Dictionary, © 2010 Douglas Harper

sickness in Medicine




The condition of being sick; illness.
A disease or an illness.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.