It amazed him to think the Vatican was failing at every turn to provide coherent, stringent guidelines for spiritual growth and yet somehow still found time to give astrophysics lectures to tourists.
Not surprisingly, the media spotlighted their spiritual commitment only briefly before moving on to the shock value of the sect’s more stringent "numerary" members… members like the monk now lying on the floor before Langdon.
There are no more uses of "stringent" in the book.
Show samples from other sources
The school has a stringent dress code.
but professional honour and faith to his dead friend were stringent obligations;