noun

sickness

illness, disease, nausea

Sickness kept him from work.

Illness kept him from work.

She felt a wave of sickness.

She felt a wave of nausea.

sickness ((as subject/object)) illness Sickness can be difficult to endure.

Synonyms: illness, ailment, disease

From the adjective 'sick' + '-ness', a suffix forming nouns of state or condition.

The '-ness' at the end turns the feeling ('sick') into the state or condition ('sickness').

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