noun
( -es )
Etymology: Middle English siknesse, seknesse, from Old English sēocnesse, from sēoc sick + -nesse -ness — more at sick
1.
a. : the condition of being ill : ill health : illness
b. : a disordered, weakened, or unsound condition
a sickness of judgment would seem to be easily recognizable — Cross Currents
2.
a. : a form of disease : malady
b. : menses
3.
a. : nausea , queasiness
sickness of stomach
— see motion sickness
b. : vomit