more poisonous

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harmful adj.
harmful adj.

ADJECTIVE

harmful

Synonyms

WEAK

bad baleful baneful corrupt corruptive dangerous deadly deleterious destructive detrimental evil fatal hurtful infective lethal malicious malignant mephitic miasmatic morbid mortal nocuous noisome noxious peccant pernicious pestiferous pestilential septic toxic toxicant toxiferous venomous vicious viperous virulent

Antonyms

WEAK

aiding antidotal assisting curing healing helpful

ADJECTIVE

harmful

Synonyms

STRONGEST

dangerous deadly destructive fatal lethal noxious pernicious toxic venomous vicious virulent

WEAK

bad baleful baneful corrupt corruptive deleterious detrimental evil hurtful infective malicious malignant mephitic miasmatic morbid mortal nocuous noisome peccant pestiferous pestilential poison septic toxicant toxiferous viperous

Antonyms

STRONGEST

gentle good harmless healthful healthy helpful kind life-giving nice nonpoisonous wholesome

WEAK

benevolent non-toxic

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.

See Examples For:

more poisonous

The air-clearing grown more poisonous with each exchange.

From Salon ● May 8, 2023

This is important because oligomers are even more poisonous to brain cells than plaques are.

From Scientific American ● Jan. 27, 2023

Citing the sanctity of the promise of a fair trial, the legal groups said they “can imagine nothing . . . more poisonous to this ancient ideal than William A. Brewer III’s behavior.”

From Washington Post ● Sep. 18, 2019

But Walt’s own relations with his daughter, played with simmering resentment by Amanda Quaid, are even more poisonous than those with his brother.

From New York Times ● May 10, 2013

“No more alligators, no more poisonous snakes, no more stealing,” Chuck Muckle said.

From "Hoot" by Carl Hiaasen