deadly

adj., -li·er, -li·est.

1. Causing or tending to cause death: deadly weapons; a deadly spill of radioactive waste products. See synonyms at fatal.
2. Suggestive of death: a deadly pallor.
3. Aiming or wanting to kill; implacable: deadly enemies.
4. 1. Destructive in effect: gave the film a deadly review.
   2. Tending to take away vitality, effectiveness, or force: the deadly habit of procrastination.
5. Absolute; utter: deadly concentration.
6. Extreme or terrible: worked under deadly strain.
7. Extremely accurate; unerring: She is a deadly shot with the bow.
8. Dull, tedious, and boring: a deadly prose style.

adv.

1. So as to suggest death.
2. To an extreme: deadly serious.

deadliness dead'li·ness n.

adjective

1. Causing or tending to cause death: deathly, fatal, lethal, mortal, vital. See live/die.
2. Gruesomely suggestive of ghosts or death: cadaverous, deathlike, deathly, ghastly, ghostlike, ghostly, spectral. See live/die.
3. Extremely destructive or harmful: baneful, malignant, noxious, pernicious, pestilent, pestilential, virulent. See help/harm/harmless.

adj

Definition: causing end of life
Antonyms: animating, energizing, harmless, healthful, healthy, invigorating, wholesome

adj

Definition: ghostly
Antonyms: lively

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IN BRIEF: Likely to cause or capable of causing death.

Poisonous substances can be deadly.

Dansk (Danish)
adj. - livsfarlig, dræbende, giftig, dødlignende, dødkedelig, dødelig
adv. - dødsens, lig-, død-, dødeligt

idioms:

• deadly enemy    dødsfjende
• deadly sin    dødssynd

Nederlands (Dutch)
dodelijk, buitengewoon, volkomen, doods

Français (French)
adj. - mortel, implacable, caustique, qui ne rate jamais (un but), meurtrier (une arme), de mort (une pâleur), casse-pieds, rasoir
adv. - mortellement, terriblement

idioms:

• deadly enemy    ennemi mortel
• deadly sin    péché mortel

Deutsch (German)
adj. - tödlich
adv. - tod..., äußerst

idioms:

• deadly enemy    Todfeind
• deadly sin    Todsünde

Ελληνική (Greek)
adj. - θανάσιμος, φονικός, αμείλικτος, μοιραίος, ολέθριος, αδυσώπητος, αφόρητος

idioms:

• deadly enemy    άσπονδος εχθρός
• deadly sin    (θρησκ., μτφ.) θανάσιμο αμάρτημα

Italiano (Italian)
mortale

idioms:

• deadly enemy    nemico mortale
• deadly sin    peccato mortale

Português (Portuguese)
adj. - mortal

idioms:

• deadly enemy    inimigo (m) mortal
• deadly sin    pecado (m) mortal

Русский (Russian)
смертельный, смертный

idioms:

• deadly enemy    заклятый враг
• deadly sin    смертный грех

Español (Spanish)
adj. - mortal, letal, mortífero, aburrido en exceso, excesivo, extremadamente preciso
adv. - completamente, mortalmente

idioms:

• deadly enemy    enemigo mortal
• deadly sin    pecado capital

Svenska (Swedish)
adj. - dödlig, dödtrist

中文（简体）(Chinese (Simplified))
致命的, 致死的, 非常地, 如死一般地

idioms:

• deadly enemy    死敌
• deadly sin    七大罪

中文（繁體）(Chinese (Traditional))
adj. - 致命的, 致死的
adv. - 非常地, 如死一般地

idioms:

• deadly enemy    死敵
• deadly sin    七大罪

한국어 (Korean)
adj. - 죽음에 이르게 하는, 지루한, 죽여야 할 (적)
adv. - 죽은 듯이, 죽음을 연상시키며

日本語 (Japanese)
adj. - 致命的な, 命をねらう, 生かしてはおけない, はなはだしい, 必死の, 死のような, ひどく退屈な
adv. - 死んだように, 死人のように, はなはだしく, ひどく

idioms:

• deadly enemy    憎悪に満ちた敵
• deadly sin    七大罪

العربيه (Arabic)
‏(صفه) مميت, مهلك, لدود‏

עברית (Hebrew)
adj. - ‮קטלני, גמור‬
adv. - ‮עד מאוד, מוחלט, כמוות‬

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deadly bugs	7 deadly zins