unforgiving

[ uhn-fer-giv-ing ]

/ ˌʌn fərˈgɪv ɪŋ /

not disposed to forgive or show mercy; unrelenting.

not allowing for mistakes, carelessness, or weakness: the unforgiving nature of aviation.

Origin of unforgiving

First recorded in 1705–15; un-¹ + forgiving

un·for·giv·ing·ness, noun

In any case, Pakistan as a nation has been unforgiving of any slights against Islam.

Disco Mullah Blasphemy Row Highlights Pakistan’s Hypocrisy |Shaheen Pasha |December 21, 2014 |DAILY BEAST
This week, Trierweiler, 49, matches that public affront with a statement of her own—in 320 unforgiving pages.

Hollande's Jilted Lover Valerie Trierweiler Tells All |Tracy McNicoll |September 3, 2014 |DAILY BEAST
After their cliffhanging draw against Ghana, expect the Germans to be clinical—and unforgiving of American errors.

Team USA 2, Portugal 2: Seconds Away From World Cup Glory |Tunku Varadarajan |June 23, 2014 |DAILY BEAST
Consequently, he was booed every time he touched the ball by the boorish, and unforgiving, Brazilians in the crowd.

Dutch Treat: The Netherlands Sinks Spain In World Cup 2014 |Tunku Varadarajan |June 13, 2014 |DAILY BEAST

The unforgiving world of Game of Thrones can make even people like Arya become hard.

‘Game of Thrones’ Star Maisie Williams, aka Arya Stark, on Her Big Premiere Episode ‘Two Swords’ |Marlow Stern |April 7, 2014 |DAILY BEAST
And in such mood I felt bitter and unforgiving towards all others who thought differently.

Incredible Adventures |Algernon Blackwood
She knew how hard and cruel and unforgiving her father was, and she dared not disobey him.

Everlasting Pearl |Anna Magdalena Johannsen
But her unforgiving eyes looked out of a hard-cut face, and her figure was stiff as a sergeant's cane.

The Wild Geese |Stanley John Weyman
She deceived me in many things, but she is dead, and I will not be unforgiving.

The Fatal Glove |Clara Augusta Jones Trask
I think that woman must have had a—a heart of stone, to be so unforgiving to her son—after reading this!

The Boarded-Up House |Augusta Huiell Seaman

unforgiving

/ (ˌʌnfəˈɡɪvɪŋ) /

not willing to forgive; unmerciful

(of a machine, system, etc) allowing little or no opportunity for mistakes to be corrected

harsh and unremitting an unforgiving and desolate landscape