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  • firth
    firth
    noun
    a long, narrow indentation of the seacoast.
  • Firth
    Firth
    noun
    John Rupert, 1890–1960, English linguist.
Synonyms

firth

1 American  
[furth] / fɜrθ /
Also frith

noun

Chiefly Scot.
  • firths
    plural
  1. a long, narrow indentation of the seacoast.


Firth 2 American  
[furth] / fɜrθ /

noun

  1. John Rupert, 1890–1960, English linguist.


firth British  
/ fɜːθ /

noun

  1. a relatively narrow inlet of the sea, esp in Scotland

"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

firth Scientific  
/ fûrth /
  1. A long, narrow inlet of the sea. Firths are usually the lower part of an estuary, but are sometimes fjords.


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of firth

First recorded in 1400–50; late Middle English ( Scots ), from Old Norse firth-, stem of fjǫrthr “fjord”

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:

The surrounding area was used for training troops during the war, and the firth was defended during World War Two.

From BBC Feb. 1, 2023

On the distant horizon was a cluster of faint street lights, a small town hunkered on the far side of the firth.

From The New Yorker Jan. 6, 2020

After a slow start County went on to dominate with Ivan Sproule scoring his firth goal in as many starts to give County the lead 11 minutes from the break.

From The Guardian Feb. 23, 2013

The firth is a 20-mile- long, eight-mile-wide strip of water dividing the islands with the mainland.

From BusinessWeek Jul. 5, 2011

Its firth had remained free of ice even in the depths of winter for centuries.

From "A Dance with Dragons" by George R. R. Martin

On the comedy podcast, Egerton went on to describe his Kingsman: The Secret Service and Kingsman: The Golden Circle co-star Colin Firth as a "fatherly figure".

From BBC Aug. 11, 2026

A pair of the rare birds of prey successfully hatched three chicks at Campfield Marsh, a wetland on the shores of Solway Firth, in Cumbria, it said.

From BBC Aug. 10, 2026

In a translation by Will Firth, the novel follows the disgraced politician’s desperate attempt to restore his reputation.

From The Wall Street Journal Jun. 3, 2026

Algae-smothered seagrass meadows in the Thames estuary along the Essex coast and the Firth of Forth on the east coast of Scotland were among those worst affected.

From BBC May 2, 2026

Jason, because he’s handsome in a British film star kind of way, not a Depp or a Pitt, but a Firth, or a Jason Isaacs.

From "The Girl on the Train" by Paula Hawkins

But where cañons are marked features, these lakes, firths, and dales of rounded section are very rare, or do not exist.

From The Galaxy, Volume 23, No. 2, February, 1877 by Various

It is the drawback of Seldon that we are twelve miles from a railway station, though we look out on one of the loveliest firths in Scotland.

From An African Millionaire Episodes in the Life of the Illustrious Colonel Clay by Grant Allen

The coasts are deeply indented with numerous bays and fiords or firths, which, when traced inland, are almost invariably found to terminate against glaciers.

From Ragnarok : the Age of Fire and Gravel by Ignatius Donnelly

The territorial designation of Albany was formerly given to those parts of Scotland to the north of the firths of Clyde and Forth.

From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg

Now we would be lurking on the mainland, now skulking on one of the islands or crossing rough firths in crazy boats that leaked like a sieve.

From A Daughter of Raasay A Tale of the '45 by Stuart Travis

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