In the interval before the inquest, Poirot was unfailing in his activity.

Nicole's unfailing good humour, patience, energy, and insightful comments were a gift.

I believe thirst to be the one unfailing birth-mark of the family.

The one unfailing symptom of a fast is the loss of weight.

The study of the human soul held an unfailing charm for Browning.

For all these and similar wants, the library has an unfailing supply.

Will causes the magnet to point with unfailing constancy to the north.

Her mother's unfailing remedy for occasions of social strain came to her.

One friend has an unfailing remedy when he cannot sleep at night.

And Judith had two unfailing foods for all hungers of the mind.

So potent was the spell of His unfailing power to give relief.

How do you explain people's vast and unfailing indifference to one another?

Jesus Christ spans the void, and gives us unfailing and undeceiving hope.

The Bourgeois had another daily custom which he observed with unfailing regularity.

These we feel at all times give us the only unfailing security.

And in South Africa, as we know, such nemesis is well-nigh unfailing.