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deadliest

ADJECTIVE

causing end of life

Synonyms

STRONGEST

bloody carcinogenic cruel dangerous destructive fatal harmful lethal malignant mortal murderous noxious pernicious poisonous savage suicidal toxic violent virulent

WEAK

baleful baneful bloodthirsty cannibalistic death-dealing deathly deleterious destroying grim homicidal injurious internecine killing mortiferous pestiferous pestilent pestilential ruthless slaying unrelenting venomous

Antonyms

STRONGEST

benign calm gentle harmless healthy helpful kind life-giving nice nonpoisonous wholesome

WEAK

animating energizing healthful invigorating lively

ADJECTIVE

ghostly

Synonyms

STRONGEST

ghastly

WEAK

ashen corpselike dead deadened deathful deathlike deathly pallid wan white

Antonyms

WEAK

animating energizing harmless healthful healthy invigorating lively 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.

“Daraxonrasib significantly elevates the survival bar in the treatment of one of the deadliest human cancers, while better preserving quality of life compared with chemotherapy,” Mark A. Goldsmith, M.D.,

From MarketWatch • Jun. 1, 2026

The deadliest outbreak in the DRC claimed nearly 2,300 lives out of 3,500 cases between 2018 and 2020.

From Barron's • May 28, 2026

Even with this early identification, the outbreak spiraled into the deadliest Ebola epidemic in history, infecting over 28,000 and killing over 11,000.

From The Wall Street Journal • May 22, 2026

The events triggered the deadliest ever war in Gaza, with 72,740 people killed to date - the majority children, women and the elderly, according to the Hamas-run Health Ministry.

From BBC • May 12, 2026

They whispered of Ser Arthur Dayne, the Sword of the Morning, deadliest of the seven knights of Aerys's Kingsguard, and of how their young lord had slain him in single combat.

From "A Game of Thrones" by George R.R. Martin