A more thorough explanation:

Aggrieved, adjective. This word is used to describe a person or entity that has been harmed by an infringement of their legal rights. It means that they have been affected in a negative way and have the right to seek legal action to address the harm done to them.

• A tenant who has been evicted without proper notice may feel aggrieved and seek legal action against their landlord.
• An employee who has been wrongfully terminated may also feel aggrieved and take legal action against their employer.
• A person who has been injured in a car accident caused by someone else's negligence may be aggrieved and seek compensation for their damages.

These examples illustrate how a person or entity can be harmed by an infringement of their legal rights and feel aggrieved as a result. In each case, the aggrieved party has the right to seek legal action to address the harm done to them.