The phrase 'ruthless night' is correct and usable in written English.
You can use the phrase to refer to a night that was especially harsh, such as a night of a violent storm, or a night filled with anguish. Example: The relentless winds blew throughout the night, making it a truly ruthless night.
12.52am: Here's how ruthless night-time online journalists can be: "That's quite a good thing to happen, that," says my colleague Gregg Roughley, as the American athlete Deena Kastor collapses in agony onto the Beijing street, her four years of preparation rendered useless, her dreams shattered, her life a misery.
"Literally; when this lovely, ruthless, masterfully restrained two-night, four-hour contemplation of love, marriage, parenthood, mental illness and identity came to an end, I stood up.
Dutton told the Australian Strategic Policy Institute the government had to hold the line on deterrence measures because people smugglers "will not go quietly into the night; they are ruthless and sophisticated criminals".
Now, however, Russia's capitalist crew are not fly-by-night asset-strippers but ruthless capitalist politician-businessmen of the sort Britain used to produce.
It was a night when City delivered a ruthless response to the abuse they had endured in Moscow.
Initially sold low-end wines like Night Train, Thunderbird; built reputation as ruthless negotiator.
On Thursday's "Late Night," actress Ann Dowd — who plays the ruthless Aunt Lydia in Hulu's TV adaption of Margaret Atwood's 1985 novel — claimed her character "would make mincemeat" of the White House press secretary.
Icily resolute top brass, played by Paul Bettany, Kevin Spacey and a splendidly leonine Jeremy Irons, convene an all-night crisis meeting to decide on ruthless measures to protect their own wealth.
Chelsea chose a bad night to lose their streak of resilience and Atlético were ruthless in the way they responded to Fernando Torres, their old favourite, opening the scoring.
Most of all, I remember the horrible nightmares that night, as I thought about the actual existence of a ruthless disease that systematically took away pieces of your body and soul, until you had nothing left.
The book ends that same night with a solitary David Ormsby, a foil to the stereotype of the ruthless businessman, at his window overlooking the city, meditating on his life choices: "What if McGregor and his woman knew both roads?
