lack of moral fibre BrE
lack of moral fiber AmE

The problem does not arise merely through lack of moral fibre.

The Baron groaned at my obvious lack of moral fibre.

It isn't just lack of moral fibre which leads to a rising divorce rate.

Just call it lack of moral fibre.'

Not being attacked was definite proof of Vimes's lack of moral fibre.

Lack of moral fibre addiction?

Lack of Moral Fibre.

Thus, let me leave the Command and the Pathfinders and turn to the darker side of morale - the lack of moral fibre.

Lack of Moral Fibre, a diagnosis for combat stress reactions commonly used used in World War II.

Psychiatrist Harry Federley, who was the head of the Military Medicine, considered shell shock as a sign of weak character and lack of moral fibre.

Sounds like Orwell is referring to what could be called, 'spineless', 'conscientious objectors', 'peaceniks', 'lack of moral fibre'...

Personally, I think this is because the people concerned are revolted by what they perceive as a lack of moral fibre, or their lack of knowledge makes them so fearful they strike out.

It should go without saying these days that to be suffering from something psychosomatic is not to be guilty of lack of moral fibre, but to be exhibiting a condition the cause of which is, at least in part, psychological.

Cheshire had strong feelings on any crew displaying LMF (Lack of Moral Fibre, a euphemism for cowardice) when subject to the combat stress of Bomber Command's sorties (many of which had loss rates of 5% or more).

Nicknamed "Jonah", he was also known as "Yellow Jones" in his early days with the RAAF, not through any perceived lack of moral fibre but due to the lingering effects on his skin of jaundice, contracted while a soldier at Gallipoli.

I never actually experienced the drama of dealing with any lack of moral fibre (LMF) cases, although I can imagine the difficulty faced by a CO who is trying to run a squadron in wartime if suddenly he was confronted with a case of LMF.

When you see his home environment, you can understand Godfrey's lack of moral fiber.

Cases of "shell shock" could be interpreted as either a physical or psychological injury, or simply as a lack of moral fiber.

They were weak and vicious, but they had the angels' own talent for music, and she had the drive and discipline to make up for their lack of moral fiber.

Surely, unions have lost much of the moral force that propelled them in better times, and Rivera's knee-jerk support for unions that have notoriously excluded people of color suggests a lack of moral fiber.

The number of Americans who realize that more of our problems stem from structure (especially the Senate, and most especially the filibuster) than from politicians' lack of moral fiber will reach the cusp of a tipping point.