Fearsome means causing fear or terror because of being powerful, dangerous, or impressive in a frightening way. A fearsome storm might have lightning that cracks the sky and winds strong enough to bend trees. A fearsome warrior in ancient times would make enemies hesitate before attacking.

The word describes something genuinely scary or intimidating, something that goes beyond mild concern. A small dog might bark at you, but a fearsome guard dog makes you stop in your tracks. A difficult math problem might be challenging, but a fearsome opponent in chess makes even experienced players nervous.

Interestingly, fearsome doesn't always mean evil or bad. A fearsome reputation can protect people, like how a castle's fearsome defenses kept its people safe. A fearsome athlete might dominate their sport through incredible skill and determination. A teacher known for fearsome standards might actually be beloved because students learn so much, even if the class feels intense.

The word combines fear with awe: when something is truly fearsome, you respect its power even as it makes you nervous. A fearsome thunderstorm commands your attention. A fearsome challenge, like climbing a mountain or learning a difficult skill, can seem overwhelming at first, but facing it can bring out courage you didn't know you had.