1. extremely cruel, violent, or harsh
2. very difficult, unpleasant, or severe
3. completely honest in a way that may be unpleasant or hurtful

Examples

• The brutal attack shocked the entire community.
• Winter conditions in the mountains can be brutal.
• The coach gave us brutal feedback about our performance.
• The brutal heat made it impossible to work outside.
• She was known for her brutal honesty during meetings.
• The brutal dictator oppressed his people for decades.
• The final exam was brutal – most students failed.