The term 'listened to' can be represented by two crossword solutions: 'HEARD' (5 letters) and 'HEEDED' (6 letters). 'HEARD' is an action verb that means to perceive sound through the ears. It is often used in the past tense, such as 'I HEARD a loud noise'. 'HEEDED' is an action verb that means to pay attention to or take notice of something. It is often used in the past tense, such as 'I HEEDED the warning'. Both words are related to the term 'listened to', which means to pay attention to or take notice of something that is being said.