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Definitions

fatal

[feyt-l] / ˈfeɪt l /
ADJECTIVE
deadly, lethal
Synonyms
STRONGEST
calamitous cataclysmic catastrophic destructive disastrous fateful incurable inevitable malignant mortal poisonous ruinous virulent
WEAK
baleful baneful deathly final ill-fated ill-starred killing malefic mortiferous noxious pernicious pestilent pestilential terminal
Antonyms
STRONGEST
assisting blessed fortunate harmless healthy helpful
WEAK
healthful life-giving nourishing trivial unimportant unnecessary vital wholesome
ADJECTIVE
critical, very important
Synonyms
STRONGEST
crucial decisive fateful inevitable
WEAK
destined determining doomed final foreordained predestined unlucky
Antonyms
STRONGEST
unimportant
WEAK
healthful life-giving nourishing trivial unnecessary vital wholesome

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.

Cholera, a dangerous bacterial infection that causes severe diarrhea and can be fatal without treatment, may be significantly reduced through diet.

From Science Daily • Apr. 7, 2026

A fatal collision at LaGuardia Airport last week marked the start of a difficult period for Air Canada, culminating on Monday with its CEO announcing he will soon retire.

From BBC • Mar. 31, 2026

Overreliance on Ford’s F 2.94%increase; green up pointing triangle hands-free driving system and limitations of the technology were partly to blame in two fatal 2024 crashes that left three people dead, federal investigators said.

From The Wall Street Journal • Mar. 31, 2026

Air Canada said Monday that CEO Michael Rousseau will retire later this year, an announcement following controversy over his failure to issue condolences both in English and French for a fatal airport disaster.

From Barron's • Mar. 30, 2026

Nothing fatal, but headaches all around in about forty minutes.

From "Artemis Fowl" by Eoin Colfer