Dictionary.com
Thesaurus.com
Synonyms

iceberg

American  
[ahys-burg] / ˈaɪs bɜrg /

noun

icebergs plural
  1. a large floating mass of ice, detached from a glacier and carried out to sea.

  2. Informal. an emotionally cold person.

  3. Australian Informal. a person who swims or surfs regularly in winter.


idioms

  1. tip of the iceberg, the first hint or revelation of something larger or more complex.

    The new evidence in the case is just the tip of the iceberg.

iceberg British  
/ ˈaɪsbɜːɡ /

noun

  1. a large mass of ice floating in the sea, esp a mass that has broken off a polar glacier

  2. the small visible part of something, esp a problem or difficulty, that is much larger

  3. slang a person considered to have a cold or reserved manner

"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

iceberg Scientific  
/ īsbûrg′ /
  1. A massive body of floating ice that has broken away from a glacier or ice field. Most of an iceberg lies underwater, but because ice is not as dense as water, about one ninth of it remains above the surface.


iceberg Cultural  
  1. A large piece of ice that has broken away from a glacier at the shore and floated out to sea.


Discover More

Most of the ice in an iceberg is underwater, leaving only the “tip of the iceberg” visible — a fact that is often alluded to in discussions of subjects in which the most important aspects are hidden from view.

Other Word Forms

Noun Inflected Forms

Etymology

Origin of iceberg

1765–75; half Anglicization, half adoption of Dutch ijsberg ice mountain; cognate with German Eisberg, Swedish isberg

Explanation

An iceberg is a huge chunk of ice that breaks off of a glacier and floats around the ocean. Most of an iceberg is under water and can't be seen; that's how a sneaky iceberg managed to sink the Titanic. Icebergs exist in the coldest waters on the planet — the largest icebergs ever observed have been in Antarctica. An iceberg is blamed in the famous sinking of the Titanic in 1912, and the disaster inspired a new system for tracking and measuring icebergs. Another kind of iceberg is the lettuce, which is crisp and nearly as pale as an actual iceberg. The colloquial "tip of the iceberg" means the smallest hint of a much larger problem.

Keep Reading on Vocabulary.com

Vocabulary lists containing iceberg

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:

But that’s only the tip of the iceberg.

From Los Angeles Times Jul. 3, 2026

That could be just the tip of the iceberg that when it comes to further dealmaking, but there are risks for investors that can’t be ignored.

From Barron's Jun. 29, 2026

Barnes said the figures were likely only the tip of the iceberg as many victims remained too embarrassed to come forward.

From BBC Jun. 15, 2026

These high-profile cases are only the tip of the iceberg.

From MarketWatch Jun. 10, 2026

The mothers asked each other where they could get carrots and broccoli, iceberg lettuce, apples, peaches, or pears.

From "When I Was Puerto Rican" by Esmeralda Santiago

I instead recall coasting past a flotilla of icebergs in Alaska’s Glacier Bay.

From Los Angeles Times Jul. 8, 2026

At the center of the discovery is sediment rich in iron that was carried into the ocean by icebergs breaking away from West Antarctica.

From Science Daily Feb. 4, 2026

And because he is the centerpiece of the show, I rely on Noah a lot for guidance and help figuring out how to steer through all the icebergs.

From Los Angeles Times Jan. 8, 2026

But beneath the smooth-sailing surface, the icebergs are still there.

From BBC Dec. 24, 2025

BWAAAAAA!—but then came more whales and more waves and more icebergs.

From "The Wild Robot Protects" by Peter Brown

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training