chaff

¹ American  

[chaf, chahf] / tʃæf, tʃɑf /

noun

1. the husks of grains and grasses that are separated during threshing.

2. straw cut up for fodder.

3. worthless matter; refuse.

4. the membranous, usually dry, brittle bracts of the flowers of certain plants.

5. Also called window.  Military. strips of metal foil dropped by an aircraft to confuse enemy radar by creating false blips.

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chaff ² American  

[chaf, chahf] / tʃæf, tʃɑf /

verb (used with or without object)

chaffs, present (3rd person singular) chaffed, past participle, past chaffing present participle

1. to mock, tease, or jest in a good-natured way; banter.

   She chaffed him for working late. They joked and chaffed with each other.

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noun

1. good-natured ridicule or teasing; raillery.

chaff ¹ British  

/ tʃɑːf /

noun

1. the mass of husks, etc, separated from the seeds during threshing

2. finely cut straw and hay used to feed cattle

3. something of little worth; rubbish (esp in the phrase separate the wheat from the chaff )

4. the dry membranous bracts enclosing the flowers of certain composite plants

5. thin strips of metallic foil released into the earth's atmosphere to confuse radar signals and prevent detection

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chaff ² British  

/ tʃɑːf /

noun

1. light-hearted teasing or joking; banter

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verb

1. to tease good-naturedly; banter

Other Word Forms

Derived Forms

• chafflike
  adjective
• unchaffing
  adjective
• unchaffed
  adjective
• chaffy
  adjective
• chaffless
  adjective
• chaffingly
  adverb
• chaffer
  noun

Conjugated Forms

Present

• have chaffed
  perfect
• has chaffed
  perfect 3rd person singular
• am chaffing
  progressive 1st person singular
• has been chaffing
  perfect progressive 3rd person singular
• is chaffing
  progressive 3rd person singular
• have been chaffing
  perfect progressive
• are chaffing
  progressive
• chaffing
  participle
• chaffs
  singular 3rd person

Past

• had chaffed
  perfect
• had been chaffing
  perfect progressive
• were chaffing
  progressive plural
• was chaffing
  progressive singular
• chaffed
  simple
• chaffed
  participle

Future

• will chaff
  simple
• will have chaffed
  perfect
• will have been chaffing
  perfect progressive
• will be chaffing
  progressive

Etymology

Origin of chaff¹

before 1000; Middle English chaf, Old English ceaf; cognate with Middle Low German, Dutch kaf

Origin of chaff²

First recorded in 1640–50; perhaps from chaff ¹

Explanation

The proverbial phrase "separate the wheat from the chaff" may not be terribly meaningful to you — unless you happen to be a grain farmer. The chaff is the husk surrounding a seed, the part of the grain that is generally thrown away. In cereal crops like rice, barley, oats, and wheat, the seed — the part of the plant that we eat — is surrounded by a husk. This waste material has been called chaff since the twelfth century at least, but the word has a long history as a metaphor meaning "objects and ideas of little or no value," as well. The Internet is full of misinformation as well as facts so you might have a hard time separating the wheat from the chaff. Their nasty comments are just a lot of chaff — don't even listen to them.

Example Sentences

“Our sense remains that the core of the AI thesis remains intact and would probably survive a continued separating of the wheat from the chaff in the frothier parts of the equity market.”

From Barron's • Nov. 10, 2025

It's more about whether you actually believe in something — and boy, oh boy, has the wheat been separated from the chaff in that respect.

From Salon • Apr. 20, 2025

Seven hundred reviewers will attempt to separate the wheat from the chaff, while 1,300 arts industry professionals will scour the city for shows to take on tour, or make into television.

From BBC • Aug. 1, 2024

For centuries, the process of milling rice — white or brown, sticky or sweet — produced bran, chaff and dust, and storing it brought vermin, fungi and spoilage.

From Seattle Times • Apr. 13, 2024

The King sprang in among his warriors, scattering them like chaff.

From "Redwall" by Brian Jacques