sicken

verb

sick·​en ˈsi-kən 

sickened; sickening ˈsi-kə-niŋ 

ˈsik-niŋ

intransitive verb

1

: to become sick

2

: to become weary or satiated

transitive verb

1

: to make sick

2

: to cause revulsion in

their prejudice sickens me

sickener

ˈsi-kə-nər 

ˈsik-nər

noun

Synonyms of sicken

• disgust
• repulse
• appall
• nauseate
• horrify

Examples of sicken in a Sentence

Many people sickened and died on the long voyage.

The bacteria in the drinking water sickened the whole village.

We were sickened by the reports of violence.

Recent Examples on the Web

Radiation sickened the entire crew, and one member later died. — Matt Alt, New Yorker, 8 Nov. 2026

Prior to vaccination, measles sickened 3 to 4 million people per year, sending nearly 50,000 to the hospital, causing 1,000 cases of brain swelling, and killing 400 to 500 people. — Beth Mole, ArsTechnica, 6 Nov. 2026

The Aliso Canyon gas leak took nearly four months to control, sickened thousands of families and forced them from their homes near the San Fernando Valley to escape a sulfurous stench and maladies including headaches, nausea and nose bleeds. — ABC News, 2 Nov. 2026

The finding also comes on the heels of a record-breaking cyclospora outbreak this summer that sickened 12,883 people across 21 states, hospitalized at least 570 and was associated with two deaths in Michigan. — Megan R. Wilson, Washington Post, 27 Oct. 2026

Word History

First Known Use

13th century, in the meaning defined at intransitive sense 1

Phrases Containing sicken

• sicken of

Rhymes for sicken

• chicken
• likin
• quicken
• stricken
• thicken
• indican

Kids Definition

sicken

verb

sick·​en ˈsik-ən 

sickened; sickening -(ə-)niŋ 

: to make or become sick

Medical Definition

sicken

transitive verb

sick·​en ˈsik-ən 

: to make sick

intransitive verb

: to become sick