"lethal blow" is a correct and usable phrase in written English.
It is typically used to refer to an extremely damaging action or event that has serious and sometimes irreversible consequences. For example: "The financial crisis dealt a lethal blow to the company's future prospects."
President Grimsson's refusal to sign has dealt a potentially lethal blow to Ms Sigurdardottir's recovery plans.
Speaking of the Palestinians, Mr. Sharon told the newspaper, "They were dealt a lethal blow".
Johann Hari of the Independent believes Williams has dealt a lethal blow to multiculturalism.
Hiroya, by the way, eventually got bounced out of the hotel, which proved a lethal blow.
And in many cases the condition began with a previous hit and a second impact was the lethal blow.
In New York, the Committee to Protect Journalists condemned the killing, calling it "a lethal blow to press freedom".
"Death does not come to the factory riding only bullets and the lethal blows of police lathis," Mr. Sengupta writes.
Indeed, it is enough (almost) to keep a critic humble, seeing this bloated extravaganza, which has absorbed more seemingly lethal blows than Rasputin, blithely surface year after year.
A1 Violence, and Talk of a Meeting Israelis and Palestinians traded lethal blows and Prime Minister Ariel Sharon said he was considering creating a buffer zone.
If you listen to music with earbuds or headphones at levels that block out normal discourse, you are in effect dealing lethal blows to the hair cells in your ears, Dr. Seidman said.
His style has not changed at all in the two years since I first saw him on the qualifying courts at Roehampton – it has just become a lot more consistent, and his lethal blows are landing more often.
