frightful

adjective

fright·​ful ˈfrīt-fəl 

1

: causing intense fear or alarm : terrifying

2

: startling especially in being bad or objectionable

a frightful novel

3

: extreme

frightful thirst

frightfully

ˈfrīt-fə-lē 

adverb

frightfulness noun

Synonyms

• alarming
• dire
• direful
• dread
• dreadful
• fearful
• fearsome
• forbidding
• formidable
• frightening
• ghastly
• hair-raising
• horrendous
• horrible
• horrifying
• intimidating
• redoubtable
• scary
• shocking
• spine-chilling
• terrible
• terrifying

Examples of frightful in a Sentence

As he fell, he let out a frightful scream.

a frightful illness that causes extreme pain

The children made a frightful mess of the kitchen.

Many critics have expressed shock at the song's frightful lyrics.

Recent Examples on the Web

The weather outside may still be frightful, but Joanna Gaines is already ushering in major spring vibes. —Averi Baudler, People.com, 26 Feb. 2025

Sure, fall and winter comforts like Pumpkin Mac and Cheese and hearty Hamburger Pie automatically warm your bones when the weather outside is frightful. —Karla Walsh, Better Homes & Gardens, 18 Feb. 2025

Video captured the frightful attack, which showed Zelenina pulling herself free. —Angel Saunders, People.com, 1 Feb. 2025

The weather was uncharacteristically frightful, causing suspension and ultimate cancellation of the popular Wednesday Pro-Am, and delays every round. —Candace Oehler, Forbes, 27 Dec. 2024

Word History

Etymology

fright entry 1 + -ful entry 1

First Known Use

1607, in the meaning defined at sense 1

Rhymes for frightful

• rightful
• spiteful
• delightful
• insightful

Kids Definition

frightful

adjective

fright·​ful ˈfrīt-fəl 

1

: causing fear or alarm

2

: causing shock or horror

a frightful novel

3

: very strong

a frightful thirst

frightfully

-fə-lē 

adverb

frightfulness noun