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Synonyms

flak

American  
[flak] / flæk /
Or flack

noun

  1. antiaircraft fire, especially as experienced by the crews of combat airplanes at which the fire is directed.

  2. criticism; hostile reaction; abuse.

    Such an unpopular decision is bound to draw a lot of flak from the press.


flak British  
/ flæk /

noun

  1. anti-aircraft fire or artillery

  2. informal a great deal of adverse criticism

"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 flak

1935–40; < German Fl ( ieger ) a ( bwehr ) k ( anone ) antiaircraft gun, equivalent to Flieger aircraft (literally, flyer) + Abwehr defense + Kanone gun, cannon

Explanation

If you’re taking flak, chances are you’re in a bad situation and taking fire from an enemy. Flak can refer to criticism — or worse, explosive shells from an antiaircraft weapon. Flak came into English as an abbreviation for the German word Fliegerabwehrkanone, meaning 'aircraft-defense gun.' (Yikes! No wonder they abbreviated it.) If you’re dealing with a lot of flak, you’re either in a fighter plane over enemy territory drawing shots, or you’re dealing with a volley of criticism that seems like antiaircraft fire. If you show up late for work for a third day, you’ll probably take some flak from your coworkers — they’ll take verbal shots at you.

Keep Reading on Vocabulary.com

Vocabulary lists containing flak

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.

See Examples For:

Visitors were greeted by security forces in flak jackets, some in military camouflage and others toting submachine guns, scattered amid a landscape of green pastures, wooden chalets and snowy peaks.

From The Wall Street Journal Jun. 21, 2026

As the case dragged on and the flak kept coming, Police Scotland's then chief constable Sir Iain Livingstone said their "diligent, thorough and proportionate" criminal inquiry was looking at potential embezzlement.

From BBC May 25, 2026

Particularly at the trial level, they’re just getting so much incoming flak, and it makes it a very different job.

From Slate May 12, 2026

Treasuries have taken a lot of flak from Wall Street in recent years, because they stopped behaving like a safe haven.

From Barron's Feb. 28, 2026

There had been no flak there at all.

From "Catch-22" by Joseph Heller

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