Synonym: deadly. Similar words: see that, lethargy, more than, lethargic, give thanks, no more than, not more than, more than ever. Meaning: ['lɪːθl] 
adj. of an instrument of certain death.
adj. of an instrument of certain death. 
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1 All these knives are absolutely lethal.
2 These chemicals are lethal to fish.
3 He was executed by lethal injection earlier today.
4 Pot-holes can be lethal for the unwary cyclist.
5 The snake's venom is rarely lethal to humans.
6 The closure of the factory dealt a lethal blow to the town.
7 It was a potentially lethal mixture of drugs.
8 You and that car-it's a lethal combination!
9 A hammer can be a lethal weapon.
10 In some US states execution is by lethal injection.
11 Frost and wet are the lethal combination for plants.
12 They were close to weaponizing ricin—a lethal plant toxin.
13 They were all drinking lethal amounts of tequila!
14 The pesticide is lethal to all insect life.
15 Execution by lethal injection is scheduled for July 30th.
16 Cars produce a lethal cocktail of gasses.
17 This wine's pretty lethal!
18 Higher taxes and higher inflation were a lethal combination .
19 A man awaiting death by lethal injection has been saved by a last minute reprieve.
20 The barriers are lethal to fish trying to swim upstream.
21 Neutron bombs release lethal radiation instead of exploding with a lot of heat and wind.
22 The bite itself is painful,[www.Sentencedict.com] but never lethal.
23 He thereby substantially improved the lethal effect of attack.
24 You know, lethal injection, the needle.
25 That cocktail looks pretty lethal.
26 The concrete mixers with lethal faults.
27 The river still carries a lethal dose of poisons.
28 Together however, these factors can prove a lethal combination.
29 Some drugs which are safe when taken separately are lethal in combination.
30 Three minutes after the fire started, the house was full of lethal fumes.
More similar words: see that, lethargy, more than, lethargic, give thanks, no more than, not more than, more than ever, hall, halt, hale, half, hallow, hallway, whale, in half, shallow, halfway, behalf, hallowed, catch-all, halyard, challenge, hallelujah, nonchalant, challenged, that, than, exhalation, cephalopod.