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sickener

American

[sik-uh-ner] / ˈsɪk ə nər /

noun

something that sickens or disgusts.

sickener British

/ ˈsɪkənə /

noun

something that induces sickness or nausea
a bright red basidiomycetous fungus of either of two species of Russula, notably the poisonous R. emetica

"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

Etymology

Origin of sickener

First recorded in 1800–10; sicken + -er ¹

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

At that stage, nine games in, Manchester City's lead at the top was just three points but the true sickener for Chelsea was the 1-0 loss at home to struggling Everton.

From BBC • Jan. 24, 2026

It is a real sickener for Emery, though.

From BBC • Dec. 28, 2024

The closer we got to full-time, the more the dread grew that there was a late sickener on its way.

From BBC • Sep. 27, 2022

Burnley are also coming off the back of a loss to Tottenham Hotspur, theirs a last-minute sickener in the Premier League last weekend.

From The Guardian • Dec. 22, 2018

I know it's a bit of a sickener.

From A Prefect's Uncle by Wodehouse, P. G. (Pelham Grenville)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023