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

Naturally, a broad swath of staffers at CBS News are aghast. —Tatiana Siegel, Variety, 7 Oct. 2025

And Clark’s fans, who have often noted the exceptionally high level of physicality directed at Clark and who’ve been aghast at the league office’s reluctance to single out her unique star power, had good reasons to believe that the league was self-sabotaging. —Louisa Thomas, New Yorker, 5 Oct. 2025

Many Salvadorans and human rights advocates were aghast at the sight of soldiers trying to pressure the lawmakers. —T. Christian Miller, ProPublica, 30 Sep. 2025

Congresswoman Frederica Wilson, a former educator in Miami-Dade, was aghast by the announcement. —Raisa Habersham, Miami Herald, 26 Sep. 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