aghast

adjective

ə-ˈgast 

: struck with terror, amazement, or horror : shocked and upset

was aghast when she heard the news

Did you know?

If you are aghast, you might look like you've just seen a ghost, or something similarly shocking. Aghast traces back to a Middle English verb, gasten, meaning "to frighten." Gasten (which also gave us ghastly, meaning "terrible or frightening") comes from gast, a Middle English spelling of the word ghost. Gast also came to be used in English as a verb meaning "to scare." That verb is now obsolete, but its spirit lives on in words spoken by the character Edmund in William Shakespeare's King Lear: "gasted by the noise I made, full suddenly he fled."

Synonyms

• terrified
• afraid
• frightened
• horrified
• scared
• shocked
• alarmed

Examples of aghast in a Sentence

The news left her aghast.

Critics were aghast to see how awful the play was.

Recent Examples on the Web

Belly has strolled into Billy Joel’s bakery to put in Jeremiah’s very exacting wedding cake order, but is aghast at the $750 price tag. —Kathleen Walsh, Vulture, 6 Aug. 2025

In the live studio audience, fans were aghast seeing this first for the long-running reality series. —Bailey Richards, People.com, 30 July 2025

As far as they are concerned, Amelia is just the scullery maid and the older woman is aghast that Sherlock would communicate with her directly. —Nina Metz, Chicago Tribune, 16 Apr. 2025

In one instance, Lisa is aghast to find a gun in his house, but her anxiety about his involvement with a local resistance group feels no more dramatic than her frustration with Basem’s reticence about the dissolution of his family. —Hannah Giorgis, The Atlantic, 11 Apr. 2025

Word History

Etymology

alteration (with h after ghastly, ghost entry 1) of Middle English agast, from past participle of agasten "to frighten, become frightened," from a-, perfective prefix + -gasten "to frighten," — more at abide, gast

Note: Oxford English Dictionry, third edition, sees agasten as formed with Middle English gasten, though this verb is not attested until more than a century later, suggesting that gasten may have been formed by dropping the prefix from agasten. Old English gǣstan is attested only once, in Cynewulf's Juliana, and the sense appears to be closer to "afflict" than "frighten." The prefix a- in the modern adjective aghast has presumably been construed as a- entry 1.

First Known Use

13th century, in the meaning defined above

Rhymes for aghast

• amassed
• biassed
• broadcast
• bypassed
• downcast
• forecast
• foremast
• harassed
• holdfast
• mainmast
• newscast
• outcast

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Kids Definition

aghast

adjective

ə-ˈgast 

: struck with terror, amazement, or horror