Adversary

The harsh weather conditions were the biggest adversary for the climbers.

Technology has become both a friend and an adversary to modern society.

The CEO's adversary approach towards the employees was counterproductive.

The disease proved to be a formidable adversary for medical researchers.

The detective knew he had a formidable adversary in the criminal mastermind he was pursuing.

The hero fought against his arch-nemesis, his greatest adversary, to save the city.

The unexpected rainstorm was an adversary to our outdoor wedding plans.

The detective's adversary investigation led to the apprehension of the criminal.

The chess player's adversary made a clever move.