Deleterious Definition
dĕlĭ-tîrē-əs
adjective
Harmful to health or well-being; injurious.
Webster's New World
Harmful often in a subtle or unexpected way (as for example deleterious effects, deleterious to health).
Wiktionary
Synonyms:
Origin of Deleterious
From Ancient Greek δηλητήριος (dēlētērios, “noxious, deleterious”), from δηλητήρ (dēlētēr, “a destroyer”), from δηλέομαι (dēleomai, “I hurt, damage, spoil, waste”).
From Wiktionary
From Greek dēlētērios from dēlētēr destroyer from dēleisthai to harm
From American Heritage Dictionary of the English Language, 5th Edition
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