fearful

adjective

fear·​ful ˈfir-fəl 

1

: causing or likely to cause fear, fright, or alarm especially because of dangerous quality

a fearful storm

2

a

: full of fear

fearful for their safety

b

: indicating or arising from fear

a fearful glance

c

: inclined to fear : timorous

3

: very great or bad

—used as an intensive

a fearful waste

fearful slum conditions

fearfully

ˈfir-f(ə-)lē 

adverb

fearfulness

ˈfir-fəl-nəs 

noun

Synonyms of fearful

• terrifying
• frightening
• scary
• formidable
• horrible
• terrible
• intimidating
• dread

Choose the Right Synonym for fearful

fearful, apprehensive, afraid mean disturbed by fear.

fearful implies often a timorous or worrying temperament.

the child is fearful of loud noises

apprehensive suggests a state of mind and implies a premonition of evil or danger.

apprehensive of being found out

afraid often suggests weakness or cowardice and regularly implies inhibition of action or utterance.

afraid to speak the truth

Examples of fearful in a Sentence

He plays the role of a timid and fearful clerk.

They won the war but at a fearful cost.

Recent Examples on the Web

This lack of awareness was on show in 2025, when, fearful of a trade war, Brussels squandered its own leverage and signed off on a lopsided framework with Washington. — Jonas Nahm, Foreign Affairs, 14 Sep. 2026

But putting the brakes on fearful predictions and reclaiming agency over a useful tech tool may be just as important, some researchers say. — The Christian Science Monitor, Christian Science Monitor, 14 Sep. 2026

The production’s creative team, led by the inexhaustibly inventive director José Luis Valenzuela, returns us to a world where the dead are owed sacred duties and the living are fearful to renege on this basic human responsibility. — Theater Critic, Los Angeles Times, 11 Sep. 2026

Done well, this will make concrete what was amorphous for the exuberant, empower the reluctant and define your moral and ethical codes for the fearful. — Elias Stahl, Forbes.com, 9 Sep. 2026

Word History

Etymology

Middle English feerful, fereful "inspiring dread, frightened," from fer fear entry 1 + -ful -ful entry 1

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for fearful

• cheerful
• tearful

Kids Definition

fearful

adjective

fear·​ful ˈfi(ə)r-fəl 

1

: causing fear

the fearful roar of a lion

2

: filled with fear

fearful of danger

3

: showing or caused by fear

a fearful glance

4

: extremely bad, large, or intense

fearful cold

fearfully

-fə-lē 

adverb

fearfulness noun