as cold as marble
【形】

1. cruel
2. hard-nosed〈話〉
3. hardfisted
4. hardhearted（人が）
5. iron-hearted（人が）
6. ruthless
7. severe（人の扱いなどが）
8. stone

with ruthless efficiency

with ruthless candor

ruthless greed

ruthless terrorist

a cruel guardian

unsparing derision

in ［with］ a steely voice（鋼のように）

ruthless poacher

ruthless war

unsparing critic

ruthless leader

stone killer

a cruel father

a ruthless operator

puppy abandoned by a heartless owner

treat someone in such a cruel way

On October 17, 1961, in the midst of the Algerian war, the security forces from the Paris Prefecture of Police, under orders from Maurice Papon, cruelly suppressed a peaceful demonstration in the city by Algerians organized by the Federation de France du FLN （National Liberation Front）to protest against the curfew specifically imposed upon them.〔【出典】Global Voices Online◆【英文】Suzanne Lehn ◆【和訳】Yukari Sugimoto ◆【License】CC BY 3.0 〕

"This dreadful record really highlights the hypocrisy of the Iranian government's attempts to show solidarity with protesters in Egypt, Bahrain and other countries in the region."〔【出典】アムネスティ発表国際ニュース（2012年2月28日） 〕

"We look to all of Syria's neighbours to provide an adequate standard of accommodation and medical care to the people who have been driven from their homes by the relentless violence," said Ann Harrison.〔【出典】アムネスティ発表国際ニュース（2012年2月24日） 〕

this cruel world

do such a cruel thing

Therefore, to save you from sighing over the state's hard-hearted attitude, I would like you to carefully consider your actions.〔【出典】Hiragana Times, 1996年2月号◆【出版社】株式会社ヤック企画 〕"HT112068", "2521280"

However, the gentleman turns out to be a ruthless criminal, who is actually planning a killing spree."MB000726", "2327335"

hard-boiled egg〈俗〉

He can be cruel, but he also has a heart.

Against the backdrop of their crumbling society, they grow callous and delinquent.〔【出典】Hiragana Times, 1995年3月号◆【出版社】株式会社ヤック企画 〕"HT101071", "2238377"

She spends her days enduring hard work and cruel treatment.〔【出典】Catch a Wave, 2005年12月23日号◆【出版社】株式会社浜島書店 〕

If there were a possibility of being infected, I would break-off my friendship even though my friend think I am cruel.〔【出典】Hiragana Times, 1993年1月号◆【出版社】株式会社ヤック企画 〕"HT075054", "2350764"

For, without that aid, we had been unable to create those moral controls over the services of science which are necessary to make science a useful servant instead of a ruthless master of mankind."USPIA321", "2300947"

For unemotional and logical fields like politics and the economy, men, with their clearly divided brain, are more suited, and for emotional areas like child rearing, women, with their undifferentiated brain, are more suited.〔【出典】Hiragana Times, 1995年10月号◆【出版社】株式会社ヤック企画 〕"HT108030", "2300788"

Japanese soldiers were heartless, but not the general public.〔【出典】Hiragana Times, 1992年6月号◆【出版社】株式会社ヤック企画 〕"HT068060", "2389167"

Recognition of that falsity of material wealth as the standard of success goes hand in hand with the abandonment of the false belief that public office and high political position are to be valued only by the standards of pride of place and personal profit; and there must be an end to a conduct in banking and in business which too often has given to a sacred trust the likeness of callous and selfish wrongdoing."USPIA322", "2436720"

non-communication