The term 'obtained illegally' can be summarized by the crossword solution 'STOLEN'. Stealing is a crime that involves taking something without permission or legal right, and it is punishable by law. It is considered a form of theft and is often seen as a serious offense. STOLEN items can range from physical objects such as money, jewelry, or electronics to intellectual property such as copyrighted material or trade secrets. In some cases, STOLEN items may also include services or information.