The weather in the valley was less rigorous than on the hills.

A conduct no less rigorous than this was quite necessary for me.

It was less rigorous than the Smite Zone downtown, but still quite large.

Now it's not like that...it is less rigorous, she told the Today programme.

Here Mohammedanism exists in a less rigorous form than in Turkey.

Birds had disappeared; they were gone to less rigorous southern climates.

But Henry granted the Welsh a charter, which rendered the administration less rigorous.

Genzyme had tried to win approval based on findings from a less rigorous trial.

The etiquette of wearing mourning is less rigorous than formerly.

Shall I learn to be less rigorous in my diet?

The cold for a time had been less rigorous.

Southward opened a narrow valley, as if pointing the road to a less rigorous land.

His thinking is a little less rigorous than others, his language a little more colorful.

There were, however, somewhat favorable provisions which made this code seem a little less rigorous.

This is, indeed, implied by a no less rigorous {168} moralist than Kant.

Sexual selection is, therefore, less rigorous than natural selection.