Deleterious synonyms

dĕl'ĭ-tîr'ē-əs

harmful (related)

Causing or able to cause harm; hurtful

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Tending to hurt someone's feelings; insulting.

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Causing physical harm or injury; harmful.

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Causing death or injury; deadly.

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Harmful to character or morality; corruptive:

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Harmful; injurious; causing damage.

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Causing or tending to cause harm, especially to a legal case:

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aiding (antonym)

harmful, damaging

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assisting (antonym)

harmful, damaging

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Sorry; regretful:

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Causing damage or harm; injurious.

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(Computing, programming, slang) undesirable; harmful; bad practice

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(Slang) Extremely bad (bad enough to make one ill). Generally used indirectly with to be.

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Inclined to annoy or vex with playful tricks; naughty

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help (related)

Causing harm or injury

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detremental (related)

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neurotoxic (related)

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sub-lethal (related)

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Designed or tending to disprove or discredit:

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Morally injurious; corrupting; unwholesome

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helpful (antonym)

The definition of helpful is someone or something that is useful, that provides assistance or aid, or that is prone to providing aid.

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Find another word for deleterious. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for deleterious, like: harmful, hurtful, injurious, pernicious, unhealthy, damaging, prejudicial, ruining, aiding, assisting and bad.