1. past tense of assert; stated or declared confidently and forcefully
2. past tense of assert; exercised or defended one’s rights or authority

Examples

• She asserted her innocence throughout the trial.
• The CEO asserted that the company would meet its quarterly goals.
• He asserted his authority as team captain.
• The witness asserted that she saw the defendant at the scene.
• The country asserted its sovereignty over the disputed territory.
• The lawyer asserted her client’s constitutional rights.
• Scientists have asserted that climate change is accelerating.