“Physical fitness and mental strength are imperative for reaching the summit.”

“It is imperative that you adhere to the terms of your employment.”

“There is an imperative need for developing technology skills and financial acumen among the world's most vulnerable.”

“The relationship of hierarchies of imperatival policies to responsibility, and to authority policies, is discussed.”

“But the imperatival character of this law is only felt in our feeling constrained to do some specific action, and is not separable from this.”

“The infinitive is most likely imperatival, an uncommon infinitive in the New Testament.”