1. the feeling of being upset or annoyed because you cannot do or achieve something
2. the prevention of the progress, success, or fulfillment of something

Examples

• She felt deep frustration when her computer crashed before she could save her work.
• His frustration with the slow internet connection was obvious.
• The team’s frustration grew as they lost game after game.
• The constant delays led to customer frustration.
• The frustration of his plans forced him to find a new approach.
• Traffic jams are a daily source of frustration for commuters.
• Her frustration was evident in her voice when she spoke to the manager.