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frightful

American  
[frahyt-fuhl] / ˈfraɪt fəl /

adjective

  1. such as to cause fright; dreadful, terrible, or alarming.

    A frightful howl woke us.

    Synonyms:
    awful, fearful
    Antonyms:
    delightful
  2. horrible, shocking, or revolting.

    The storm did frightful damage.

    Synonyms:
    gruesome, ghastly, horrid, dread, hideous
    Antonyms:
    delightful
  3. Informal. unpleasant; disagreeable.

    We had a frightful time.

  4. Informal. very great; extreme.

    That actor is very talented but a frightful ham.


frightful British  
/ ˈfraɪtfʊl /

adjective

  1. very alarming, distressing, or horrifying

  2. unpleasant, annoying, or extreme

    a frightful hurry

"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

Other Word Forms

Etymology

Origin of frightful

Middle English word dating back to 1200–50; see origin at fright, -ful

Explanation

Anything that makes you feel horrified is frightful, whether it's a frightful traffic accident on the highway or your brother's frightful new haircut. This adjective is more common among British English speakers than American ones, but no matter where you live it's a good way to describe something that causes distress, shock, or offense. You may look frightful after falling in the swimming pool while fully clothed, but the frightful sounds coming from a haunted house might cause you to feel more actual terror — or fright.

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Vocabulary lists containing frightful

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.

This is the eighth and final year Enea’s family of four will be remaking its Van Nuys property into a frightful, walk-through attraction that spooks thousands of visitors each Halloween.

From Los Angeles Times • Oct. 28, 2025

It’s a frightful and gargantuan performance that should come with a trigger warning.

From New York Times • Feb. 29, 2024

The outdoors may be frightful, but indoors is where time is best spent amid the frigid cold month of January.

From Salon • Jan. 29, 2024

Yes, people may have tips and comfort to share, but they also offer a frightful peek into the future.

From Slate • Jan. 28, 2024

If frightful was at ease with Sam, so was he.

From "Frightful's Mountain" by Jean Craighead George

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