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From Medieval Latin deleterius, from Ancient Greek δηλητήριος (dēlētḗrios, “noxious, deleterious”), from δηλητήρ (dēlētḗr, “a destroyer”), from δηλέομαι (dēléomai, “I hurt, damage, spoil, waste”), 1640s.
- (Received Pronunciation) IPA(key): /ˌdɛlɪˈtɪəɹi.əs/, /ˌdɪlɪˈtɪəɹi.əs/
- (US) IPA(key): /ˌdɛləˈtɪɹi.əs/
Audio (US) (file) Audio (AU) (file)
- Rhymes: -ɪəriəs
- Harmful often in a subtle or unexpected way.
- Synonyms: destructive, harmful, hurtful, injurious, noxious, pernicious; see also Thesaurus:harmful
- deleterious effects
- deleterious to someone's health
- 2017 September, Jean M. Twenge, “Have Smartphones Destroyed a Generation?”, in The Atlantic:
- The advent of the smartphone and its cousin the tablet was followed quickly by hand-wringing about the deleterious effects of “screen time.” But the impact of these devices has not been fully appreciated, and goes far beyond the usual concerns about curtailed attention spans.
- (genetics) having lower fitness.
- deleterious at OneLook Dictionary Search
- deleterious in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
- “deleterious” in Douglas Harper, Online Etymology Dictionary, 2001–2020.