He was feeling a sense of exhaustion from work stress.

He collapsed from fatigue.

His proposal was unilaterally rejected.

He refused my proposal.

He is my powerful rival.

He was taken to the hospital for an acute myocardial infarction.

Unpreparedness is the greatest enemy, let's always be careful not to neglect caution.

This park is completely artificially made.

Your friendship is very precious to me.

He treasures that experience.