Meaning

2 senses
  1. (formal)Harmful, often in a subtle or unexpected way.

    deleterious effects

    deleterious to someone's health

    schädlich, gesundheitsschädlich

    вре́дныйvrédnyj, вредоно́сныйvredonósnyj

    шкідли́вийškidlývyj, згу́бнийzhúbnyj

    harmful to living things

  2. Having lower fitness.

    A deleterious mutation

Examples

3 sentences
  1. Insufficient illumination is deleterious to ocular health.

    CC BY · Tatoeba · AlanF_US · C2Open on TatoebaReport a problem
  2. This would have a deleterious effect on our ability to organize.

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  3. We cannot continue to ignore the deleterious effects of these policies on our country.

    CC BY · Tatoeba · mailohilohi · C2Open on TatoebaReport a problem

Translations

9 languages
Українська
By meaning 1
harmful:
Русский
By meaning 1
harmful:
Deutsch
By meaning 1
harmful:

Origin

Adapted borrowing (1640s; 1582 as deletorious) of New Latin dēlētērius, dēlētōrius + -ous,

Adapted borrowing (1640s; 1582 as deletorious) of New Latin dēlētērius, dēlētōrius + -ous, from Ancient Greek δηλητήριος (dēlētḗrios, “noxious, deleterious”), from δηλητήρ (dēlētḗr, “a destroyer”), from δηλέομαι (dēléomai, “I hurt, damage, spoil, waste”). Not related to delete or deleble. Doublet of deletery.

Wiktionary, CC BY-SA 4.0 · source

Forms

more deleterious, most deleterious
Comparativemore deleterious Lesson
Superlativemost deleterious Lesson

regular

Synonyms

19 synonyms

Word family

4 related words

See also

neighbours in the dictionary
deleterious — meaning, examples, forms, synonyms | Krumeto