The term 'looked into deeply' can be summarized by the crossword solution 'PROBED, ' which is a 6-letter word. Probing is an investigative technique used to gain more information about a certain topic or issue. It involves asking questions and gathering evidence in order to gain a better understanding of the subject. Probing can be used to uncover new facts, identify patterns, and draw conclusions. It is often used in research, journalism, and law enforcement.